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# Silent Diving - Rebreather Sales And Training: Silent Diving is the exclusive distributor of AP Diving rebreathers across North, Central, and South America. Based in Port St. Lucie, Florida, we specialize in Inspiration and Evolution closed circuit rebreathers with comprehensive support services. Our experienced team, led by President Mike Fowler with 34+ years diving experience and Operations Manager Jennifer Jennings with 27+ years and 2,000+ hours on Inspiration units, provides authorized maintenance, upgrades, repairs, and certified training. We offer complete rebreather solutions including accessories, consumables, cylinders, valves, dive computers, lights, and gas connection systems. Professional divers trust our expertise for reliable rebreather technology.

## Sitemaps
[XML Sitemap](https://silentdiving.com/sitemap_index.xml): Includes all crawlable and indexable pages.

## Posts
- [California Wrecks Punish a Warm-Water Dive Plan](https://silentdiving.com/blog/california-wreck-diving-cold-water-plan/): Diving a California wreck on a rebreather isn't a tropical dive with a thicker suit. Water at depth runs cold enough to eat into your scrubber's working duration. Your exposure gear rewrites your ballast. And most of the wrecks worth visiting sit in protected water where the rules are stricter than divers expect. Plan from the bottom temperature up rather than the surface reading down, and most of the usual problems disappear before you splash.
- [Your Oxygen Valve Has Two Threads, Not One](https://silentdiving.com/blog/rebreather-oxygen-valve-threads/): A rebreather oxygen valve has to satisfy two different threads at once, and they're not the same size. One end screws into the cylinder. The other faces your regulator and the fill whip. On an AP Diving unit that pairing is a 3/4-inch NPSM cylinder thread with a DIN 5/8-inch BSP outlet. Get one right and the other wrong, and you own a bottle nobody can fill.
- [The Emergency Plan Your Unit Check Misses](https://silentdiving.com/blog/emergency-plan-your-unit-check-misses/): Ask that same diver who they'd call from the boat if somebody surfaced unresponsive, and the answer usually goes quiet. The other half of a dive safety checklist has nothing to do with the machine. It's the phone numbers, the emergency oxygen, the people on deck who know what a loop is, and a drill somebody has run at least once. That half is normally unwritten.
- [Trimix Diluent Changes Three Things You Own](https://silentdiving.com/blog/trimix-diluent-changes-your-ccr-kit/): A helium-capable analyzer stops being a luxury at this point. You need both fractions before the gas goes anywhere near the loop. Funny enough, the trimix diving gear conversation usually starts with a bigger cylinder. It should start with an analyzer.
- [The Manufacturer Will Not Sell You a Unit Until You Are Certified](https://silentdiving.com/blog/manufacturer-will-not-sell-a-unit-until-you-are-certified/): Ask about diver training cost and you'll get a course fee back. That number is real. It's also the smallest part of moving to closed circuit. The bigger costs are the order you have to do things in, the months it takes, and the hours you owe after the card. Most divers budget for a long weekend and a single invoice. Plan for a season instead. You'll train on a unit before you own one, you'll spend money on gas and absorbent during the course, and you'll still owe a stack of quiet, unglamorous dives before the machine is yours.
- [Navy Rebreathers Trade Depth for Silence](https://silentdiving.com/blog/navy-rebreathers-trade-depth-for-silence/): Read enough about closed-circuit diving and you’ll meet the same line. The military has dived rebreathers since the Second World War. It reads like reassurance, and divers borrow it constantly while they’re weighing up a first unit.
- [At 100 Feet You Breathe Four Times the Gas](https://silentdiving.com/blog/breathe-four-times-the-gas-at-100-feet/): Ask how much air you can hold underwater and the honest answer keeps moving. Depth moves it. Whatever a cylinder gives you near the surface, plan on roughly a quarter of that at 100 feet. Nothing about the cylinder changed. The water did. That one relationship explains most of what frustrates people about gas planning in scuba diving, and it explains why a bigger tank stops helping sooner than you would guess.
- [A Runaway Ascent Is the Fastest Emergency on a CCR](https://silentdiving.com/blog/stop-a-runaway-ccr-ascent/): You push off the wreck, glance at your computer, and the depth is already unwinding faster than you chose. Your wing feels firm. The loop feels full. And you're rising. A runaway ascent is what happens when the gas in your counterlungs, your wing, and your drysuit all expands at once and lifts you faster than you can vent. On a rebreather it builds quietly, with none of the bubble noise that warns an open-circuit diver. Catch it early and you dump gas and settle back down. Miss it and the last few meters can turn into a real emergency.
- [Should Your Next Cylinder Be Steel or Aluminum?](https://silentdiving.com/blog/steel-or-aluminum-dive-cylinders/): Both metals make good dive cylinders, so the real question isn't which one is better. It's which one belongs on which part of your rig. Steel earns its place as back gas and primary bailout, where you want the cylinder to stay heavy from the first breath to the last. Aluminum shines as a stage bottle, a deco cylinder, and the tank you actually want to carry through an airport. Neither wins outright. The right call comes down to how the cylinder behaves at the end of a dive, how much lead you're willing to wear, and where you dive most.
- [Electronic or Manual: The Rebreather Control Decision](https://silentdiving.com/blog/electronic-or-manual-rebreather-control/): Two rebreathers can look almost identical on the bench and think in completely different ways. One runs a small computer that watches your oxygen and feeds the loop for you. The other hands that job to you, breath by breath. That single difference, who controls the oxygen, shapes how the unit dives, what it costs, and how it fails. For most divers moving onto a closed-circuit loop, an electronically controlled unit is the right call, because it carries the oxygen math so your attention can go to the dive.
- [Why a Speck of Oil Can Set Your Oxygen System on Fire](https://silentdiving.com/blog/keep-your-oxygen-system-fire-safe/): Bolt a small silver bottle onto the side of your loop, screw on the first stage, and it looks like the most ordinary piece of kit you own. It isn't. That bottle feeds nearly pure oxygen into your rebreather, and pure oxygen quietly changes the rules. Things that would never catch fire in normal air can ignite in an instant, and the fuel can be as small as a fingerprint of grease. So the oxygen side of your unit earns a kind of care the rest of your gear never needs.
- [Fitness Is Part of Your Rebreather’s Life Support](https://silentdiving.com/blog/fitness-for-rebreather-diving/): You're standing in front of a rebreather, half sold on it, and one quiet worry keeps surfacing. Are you fit enough? It's a fair question, and the honest answer surprises people. You don't need to be an athlete. But on a closed-circuit loop your body stops being a passenger and becomes part of the safety system. Your fitness helps manage the gas you breathe. This is what rebreather diving actually asks of your body, and how to get ready long before you book a course.
- [Owning a Rebreather Costs More Than Buying One](https://silentdiving.com/blog/what-a-rebreather-really-costs/): Ask what a rebreather costs and you'll get a number for the unit. That number is real, and it's a big one. But it's also the least useful answer, because the sticker price is where the spending starts, not where it ends. A closed-circuit rebreather is a machine you feed, check, and service for as long as you dive it. The honest way to budget for one is to look past the purchase and add up what it takes to keep the loop safe on every dive after that.
- [Does a Rebreather Diver Need a Separate Dive Computer?](https://silentdiving.com/blog/dive-computer-for-rebreather-diving/): Your rebreather already has a screen on your wrist or in front of your face. It shows your setpoint, your oxygen partial pressure, your depth, your time. So a fair question comes up the moment a diver moves from open circuit onto a loop: if the handset already tells you everything, why carry another computer at all?
- [The Real Difference Between Open Circuit and Rebreathers](https://silentdiving.com/blog/open-circuit-vs-closed-circuit-diving/): Watch a rebreather diver glide past and the first thing you notice is the silence. No roar of bubbles, no cloud rising to the surface. That one detail hints at a deep difference in how the two breathing systems actually work. For most divers building skills on a single tank, open-circuit scuba is the right tool, and it stays that way for years. A closed-circuit rebreather earns its place when you want long, quiet, gas-efficient dives and you're ready for the training and upkeep that come with it. This guide lays out where each system wins, so you can match the gear to the diving you truly want to do.
- [Protect Your Skin and Lungs When You Handle Sofnolime](https://silentdiving.com/blog/handle-and-dispose-of-sofnolime-safely/): Sofnolime keeps you breathing underwater, but the granules are a caustic chemical. Treat a fresh drum the way you would treat lye or oven cleaner. The fine white dust can burn your eyes and irritate your lungs. Wet granules are worse. The short answer is simple. The absorbent is safe to use, and it still deserves respect every time you open the drum. This post covers how to load it, how to protect yourself, and what to do with the spent material after a dive.
- [What Cylinders and Valves Does a CCR Need?](https://silentdiving.com/blog/rebreather-cylinders-and-valves/): Set a rebreather next to an open-circuit rig and one thing looks almost comical: the cylinders are tiny. Two little bottles, each smaller than most divers expect, feeding a machine that keeps you down for hours. So a fair question comes up early, usually the first time a diver stands in front of the cylinders-and-valves shelf. What do these units really need?
- [The Navy’s New Dive Suit Skips Decompression Entirely](https://silentdiving.com/blog/navy-dsend-no-decompression-suit/): An atmospheric diving suit works less like scuba and more like a wearable submarine. Its rigid shell resists the outside pressure, so the diver inside never feels it. The body stays at one atmosphere and breathes ordinary air, no matter how deep the suit goes. One Navy diver described being able to stay "comfortable essentially indefinitely," because the physiological clock that limits ordinary diving barely ticks. The engineering price is bulk: articulated joints, thrusters, and onboard life support that add up to a heavy, expensive machine with a diver tucked inside. Steering comes from built-in thrusters rather than fin strokes, and the hands work through mechanical manipulators instead of bare fingers. It's a superb way to park a worker deep for hours. It's clumsy next to a human swimming free.
- [When Does a Rebreather Dive Actually Need a Reel?](https://silentdiving.com/blog/when-a-rebreather-dive-needs-a-reel/): Most divers first meet a reel as a piece of gear they are told to carry, then never quite learn when it earns its place or how to run it well. This article works through what a dive reel really does underwater, the specific conditions that push a rebreather dive across the line into reel territory, how a primary reel differs from a small safety spool, and the line-handling habits that keep the tool from becoming the hazard. None of it replaces formal overhead or navigation training. It is the context that makes that training stick.
- [What Every Oxygen Cylinder Label Should Show](https://silentdiving.com/blog/oxygen-cylinder-labels/): Line up three small cylinders on a bench — one oxygen, one diluent, one bailout — and from a couple of feet away they can look identical. On the surface that ambiguity is harmless. At forty meters, reaching for the wrong regulator or topping a cylinder with the wrong gas turns a routine dive into an emergency. The strip of printed vinyl wrapped around each cylinder is what keeps those gases straight, and on a closed-circuit rebreather it quietly does more work than most divers give it credit for.
- [What Runs Out First on a Long Rebreather Dive?](https://silentdiving.com/blog/rebreather-bottom-time-limits/): New rebreather divers hear the same promise over and over: a closed-circuit unit gives you hours in the water while an open-circuit diver is already watching a shrinking gas gauge. There is truth in that, but it quietly hides the real question. Your rebreather bottom time is not one number printed on a spec sheet — it is whatever limit you happen to reach first on the dive in front of you. Understand those limits, and you can plan honestly instead of trusting a marketing figure.
- [What Your CCR Dive Log Reveals After You Surface](https://silentdiving.com/blog/ccr-dive-log-review/): Every closed-circuit rebreather dive leaves behind a detailed record, and almost nobody reads it. You surface, rinse the unit, break down the loop, and the most honest account of what just happened stays locked in the controller's memory. The handset in front of you only ever showed a live snapshot — the number you needed in the moment — while the full recording quietly captured the whole story at a level of detail no diver can hold in their head.
- [When a Dive Scooter Earns Its Place on a CCR Dive](https://silentdiving.com/blog/choosing-a-dive-scooter-ccr/): An underwater scooter is one of the few pieces of kit that changes what a dive feels like. Suddenly the far end of the wreck is reachable, the long swim out of a cavern stops eating your gas, and a stiff current becomes a non-event. For divers already carrying the workload of a closed-circuit rebreather, that extra range is genuinely tempting. The trouble is that a scooter is not a single product with a single answer — it is a category, and the compact travel-friendly units that dominate the reviews are built for very different diving than the heavy torpedo-style vehicles a deep team relies on.
- [Dive Accident Searches Jumped 900%. The Risk Didn’t.](https://silentdiving.com/blog/dive-accident-searches-vs-risk/): Something strange happened to diving this year, and it had nothing to do with the water. Searches for “dive accident” climbed by roughly 900 percent, spiking after a run of alarming headlines and viral clips. Yet the number that actually matters barely moved. The fatality rate that dive-safety researchers have tracked for years has held near two deaths per 100,000 dives, and 2026 has not rewritten it.
- [How to Keep Sofnolime 797 Fresh and Dive-Ready](https://silentdiving.com/blog/keep-sofnolime-797-fresh/): Every closed-circuit rebreather diver eventually stares at a drum of white granules and wonders how much trust it really deserves. The absorbent in your scrubber is the quietest piece of life support you own. It has no battery, no display, and no alarm of its own, yet it is the only thing standing between your exhaled breath and the carbon dioxide that would otherwise build up in a closed loop.
- [The Return of US Aquanaut Diving Is a CCR Story](https://silentdiving.com/blog/us-aquanaut-habitat-ccr/): At 17 meters (56 ft), DEEP's new Vanguard habitat is now sitting on the seafloor at Tennessee Reef inside the Florida Keys National Marine Sanctuary. The deployment on June 30 marks the return of a permanent US undersea installation, ready to host aquanauts on five-day-plus missions for the first time in roughly forty years. It is not a headline about diving hardware. It is a headline about US in-water science getting a new job site.
- [When Does a CCR Diver Actually Need an Off-Board Bailout?](https://silentdiving.com/blog/ccr-off-board-bailout/): Off-board bailout is not a free upgrade. The extra cylinder brings real handling, trim, and workload cost that the diver has to account for on every dive from the moment the configuration changes. Understanding what those costs are, and how they are mitigated, is part of deciding whether a specific dive actually needs the off-board configuration or whether onboard bailout is still the right call.
- [Why CCR Trim Is Nothing Like Open-Circuit Trim](https://silentdiving.com/blog/ccr-trim-vs-open-circuit/): Divers who move from single or twin-cylinder open circuit to a closed-circuit rebreather almost always struggle with trim in their first ten dives. It is not because they forgot how to breathe, hold a horizontal position, or manage a wing. It is because the weighting and mass-distribution math that carried them through hundreds of open-circuit dives quietly stops applying the moment they clip on a rebreather. Weight belts, trim pockets, wing lift, and body position all move to different rules, and the rules change again between the surface, the first ten meters of descent, and depth.
- [Why a Mouthpiece Retaining Strap Belongs on Your CCR Setup](https://silentdiving.com/blog/ccr-mouthpiece-retaining-strap/): The Rebreather Training Council formalized a position on this in June 2026 that pushes mouthpiece retaining straps from optional accessory to core safety equipment for every closed-circuit dive with real depth, real deco obligation, or any solo CCR work. The argument rests on peer-reviewed survival data drawn from a French military diver study that compared loss-of-consciousness outcomes with and without a retaining strap in place. For AP Diving Inspiration and Evolution owners, the practical question is no longer whether the strap belongs on the rig at all; it is how to integrate it into a chassis the diver already trusts, in a way that respects the existing headstrap and mask geometry, and that the diver can perform under pool drill conditions before the first real dive.
- [How Should You Manage Diluent Addition on a CCR Dive?](https://silentdiving.com/blog/ccr-diluent-management/): Most closed-circuit rebreather divers think about diluent twice in their training: first when they pick the blend that will go in the bottle, and again when they bench-test the unit before a dive. After that, the gas tends to fade into the background. The automatic diluent valve handles routine injection on descent, the manual valve sits within arm's reach for the occasional flush, and the diver focuses on cells, scrubber, and the dive itself. That works on a calm dive where nothing surprises the loop. It does not work on a profile that involves real depth changes, a long bottom time, an unexpected leak, or a deliberate setpoint shift in the middle of the ascent.
- [How Tech Divers Identified a WWII Hellship at 50 Meters](https://silentdiving.com/blog/tech-divers-identified-wwii-hellship-50-meters/): The Hofuku Maru wreck lies broken in three sections on the seabed at a depth of around 50 meters off the west coast of Luzon in the Philippines, near the municipality of San Narciso. She was a 117-meter Japanese army transport, sunk on 21 September 1944 by US Navy carrier aircraft while carrying 1,289 British and Dutch prisoners of war below decks. Only 242 survived. For more than 80 years her exact resting place was uncertain, until a team of technical divers working with the Hellships Memorial Foundation confirmed the wreck's identity on the bottom and gave relatives a documented war-grave location for the first time.
- [How Does a Liveaboard Trip Test Your CCR Setup?](https://silentdiving.com/blog/ccr-liveaboard-trip-planning/): A liveaboard trip is the moment a closed-circuit rebreather stops behaving like a weekend tool and starts behaving like a life-support system that has to keep functioning, in salt air, on a moving deck, for five to seven straight days, in a place where the nearest replacement oxygen cell is on a different continent. Day-boat diving lets a diver fall back on the dive shop, the UPS truck, and a calm evening of repair work at home. A liveaboard removes all three. Every consumable you packed, every spare part you stowed, and every backup plan you mapped before the boat left the dock has to carry the whole trip.
- [Why Sloppy Scrubber Packing Cuts Your CCR Dive Short](https://silentdiving.com/blog/ccr-scrubber-packing-mistakes/): Scrubber duration on a closed-circuit rebreather is a system specification, not a personal guarantee. The number on the box assumes a clean, properly packed canister with absorbent grain sitting tight against the walls and no gaps for gas to slip around. The number on your dive is whatever the pack you built that morning actually delivers. The gap between those two numbers is where most CCR divers lose minutes, and it is also where most CO2 hits start. Sloppy ccr scrubber packing is a quiet failure - it does not warn you at the surface, and by the time it shows up in the water you are already managing a problem rather than a dive.
- [How Often Should CCR Divers Run Currency Dives?](https://silentdiving.com/blog/ccr-currency-dives-cadence/): Most experienced rebreather divers can tell, within the first ten minutes of a comeback dive, how long they have been away from the loop. The bubbles in the bag breathe back differently when the operator is rusty. The pre-dive flow runs a half-beat slower. The eyes that used to scan the cells without thinking now have to remember which order they live in on the handset. Currency, on a closed-circuit rebreather, is not a calendar fact. It is a behavior, and it decays faster than most divers admit between trips.
- [Catching a CO2 Hit Before It Ends Your CCR Dive](https://silentdiving.com/blog/catching-a-co2-hit-before-it-ends-your-ccr-dive/): The earliest sign that carbon dioxide is climbing inside a closed-circuit loop is rarely the dramatic gasp the training videos show. It is a quiet, creeping headache. A subtle reluctance to look up. A breath rate that has not changed on your wrist tank pressure but that suddenly costs more attention. For a closed-circuit rebreather diver, those signals matter more than any single handset readout. They are how the body tells you the scrubber bed has stopped doing its job.
- [What Should You Know Before a CCR Dive at Altitude?](https://silentdiving.com/blog/ccr-altitude-diving/): On June 13, 2026, a master-diver candidate died on a ninety-to-one-hundred-foot dive inside Utah's Bear Lake during a group training day. The lake's surface sits at roughly one-thousand-eight-hundred meters of elevation, which is about five-thousand-nine-hundred feet above sea level. The exact circumstances are not ours to interpret, but the elevation-and-depth combination is the part that should pull every closed-circuit diver's attention. Sea-level habits do not automatically transfer to a mountain lake, and the rebreather diver who has only ever worked the warm Atlantic coast carries a quiet stack of assumptions that the thinner surface air will start to test the moment the lid closes on the loop.
- [How Do You Plan a Deep CCR Trimix Dive?](https://silentdiving.com/blog/ccr-trimix-dive-planning/): A CCR trimix dive plan is not a single decision. It is six dependent decisions that have to settle in order before any of them are final. The target depth comes first because every other layer is downstream of it. Once the target depth is set, the next layer is the helium fraction in the diluent, which is driven by the equivalent narcotic depth the diver is willing to accept. The oxygen fraction in the diluent comes after the helium fraction, because on a closed loop the diluent's oxygen content is mainly a surface-and-bailout consideration rather than a working-mix consideration. Scrubber duration sits next to that decision because the dive time being planned has to live inside the scrubber's verified runtime margin. The bailout strategy follows from the diluent and the dive time, because the open-circuit math is what determines how many cylinders sit on the harness. Decompression strategy comes last, because the deco mixes and stops are a function of the bottom mix, the runtime, and the bailout setup.
- [What Does the Maldives Tech-Wreck Law Mean for CCR Divers?](https://silentdiving.com/blog/maldives-tech-wreck-law-ccr-divers/): The Maldives has been off the map for closed-circuit rebreather and trimix divers for years. The country caps recreational diving at thirty metres and does not permit technical or rebreather operations past that ceiling, which has kept its deeper wrecks and submerged cave systems closed to the same expedition divers who travel for them. That is now beginning to shift. After a deadly cave incident this spring, the Maldivian government has moved a Tech-Wreck law toward review that would, for the first time, formally allow technical and rebreather diving inside Maldivian waters under defined certification and operator standards.
- [How Does Bonaire’s Visitor Surge Reshape a CCR Week?](https://silentdiving.com/blog/bonaire-visitor-surge-ccr-planning/): Bonaire's visitor arrivals climbed 13.9 percent in May 2026, with roughly 37.1 percent of US travelers naming diving as the primary reason for the trip. For closed-circuit rebreather divers planning an August through October week on the island, that single statistic changes what a normal day of long-bottom-time shore diving looks like. Popular yellow-rock entries rotate earlier in the morning, more boats run over the western walls in the afternoon, and the long bottom times a CCR diver wants are easier to deliver when site sequencing is built around the new crowd pattern rather than around the schedule a five-year-old guidebook printed.
- [What Raises DCS Risk on a CCR Dive?](https://silentdiving.com/blog/ccr-dcs-risk-factors/): CCR diving also stretches the operator's window for ignoring early warning signs. The breathing loop is quiet, the temperature is buffered by the scrubber, and the gas does not run low. Open-circuit divers feel their consumption climb during stress. CCR divers can dive 90 minutes without a single physical cue that anything has changed, which is why CCR DCS risk often shows up at the end of the dive as a tissue load problem rather than during the dive as a gas problem.
- [How Long Should You Wait to Fly After CCR Diving?](https://silentdiving.com/blog/fly-after-ccr-diving/): Flying after diving is one of the oldest rules in the sport, and most divers know the basic version of it: do not get on a plane the same day you surface from a recreational dive. The version that applies to closed-circuit rebreather diving is less well known and almost always tighter than the open-circuit habit a diver brings to the platform. A CCR profile that looks identical to an open-circuit profile on paper often delivers a different inert-gas load to the tissues, and that difference matters when the cabin altitude drops the ambient pressure during the climb. A diver who plans the no-fly window from open-circuit memory can show up at the airport with a real residual nitrogen burden and no buffer left for a delayed flight, a missed connection, or a single warm late-day dive that pushed the math past the line.
- [How Do You Inspect a Used CCR Before Buying?](https://silentdiving.com/blog/inspect-used-ccr-before-buying/): A used closed-circuit rebreather can be a great way into the platform, or it can be the most expensive piece of broken equipment a diver ever owns. The unit either supports the diver's life on every dive or it does not, and the difference often shows up in details that are not visible from a listing photo. A used AP Diving Inspiration or Evolution that has lived a hard, undocumented life can pass a casual surface inspection and still hide problems that take a trained eye and a service bench to find. The diver who treats the purchase like a project car ends up with a project. The diver who treats it like a life-support audit ends up with a unit they trust.
- [How Should You Prepare a CCR for Cold Water?](https://silentdiving.com/blog/ccr-cold-water-preparation/): Cold water does not change what a closed-circuit rebreather does. It changes how forgiving the unit is. The scrubber reacts slower. The oxygen cells settle slower. The diver's hands stop cooperating with valve drills sooner. Pre-dive habits that feel automatic in eighty-degree surface water become genuinely dangerous at thirty-eight degrees if the dive plan has not been adjusted. Cold-water CCR diving is where small habits compound, both the helpful ones and the harmful ones, and it rewards divers who think through the dive on the surface before the first descent.
- [What Changes When You Run a DPV With a CCR?](https://silentdiving.com/blog/ccr-dpv-dive-planning/): A diver propulsion vehicle changes more than how fast you cover a wreck or how far you can range from a wall. On open circuit, a scooter is largely a logistics tool. It gets you to the dive site, stretches your bottom time, and makes long-range exploration possible without exhausting yourself. On a closed-circuit rebreather, every one of those changes interacts with the loop you are breathing. Work of breathing drops. Carbon dioxide production drops. The scrubber stretches further on paper. Bailout cylinders are suddenly hundreds of meters away from the ascent line. And the dive computer sees a depth profile that does not match the diver's effort.
- [Can You Pair a CCR Diver With an Open-Circuit Buddy?](https://silentdiving.com/blog/ccr-open-circuit-buddy-diving/): Most closed-circuit rebreather divers do not dive alone all the time. A lot of trips, especially recreational reef trips, charter boats, and dive club outings, end up pairing one CCR diver with one or two open-circuit buddies on the same dive plan. That mixed-team setup is common, and it is not inherently unsafe. But it is different. The two divers are running entirely different life-support systems, with different consumption math, different failure modes, different signals, and different ascent profiles. A team that ignores those differences ends up with one diver shortening the dive, surprising the other, or worse.
- [How Do You Choose the Right CCR Instructor?](https://silentdiving.com/blog/ccr-instructor-selection/): This article walks through what to look at when you start short-listing CCR instructors, what differences between training agencies actually mean in practice, and the questions to ask before you put down a deposit.
- [How Do You Manage Narcosis on a CCR Dive?](https://silentdiving.com/blog/ccr-narcosis-management/): Inert gas narcosis is one of the oldest known hazards in technical diving, but it behaves differently on a closed-circuit rebreather than it does on open circuit. The loop changes the gas mix you are actually breathing, the breathing pattern, and the cues your body uses to notice impairment. Divers who learned narcosis management on open-circuit air or nitrox can find themselves surprised by how it feels, when it starts, and what it costs in cognitive performance under a CCR hood. This article walks through the physiology, the equivalent narcotic depth math, the in-water signs, and the diluent and setpoint decisions that keep your head clear on a closed-circuit dive.
- [How Often Should You Calibrate CCR Oxygen Cells?](https://silentdiving.com/blog/calibrate-ccr-oxygen-cells/): Every closed-circuit rebreather dive starts with a single question that gets surprisingly little dedicated coverage: do your oxygen cells actually agree with reality? Calibration is the only routine check that answers it. Pre-dive lights, scrubber packing, and battery checks all matter, but none of them verify that the three cells in your loop can read partial pressure accurately under the conditions you are about to dive. That trust gap is what calibration closes.
- [How Do You Pack a CCR Scrubber Right?](https://silentdiving.com/blog/ccr-scrubber-packing/): The scrubber is the part of a closed-circuit rebreather that removes carbon dioxide from the breathing loop. The chemistry is well understood, the cartridge geometry is engineered for predictable performance, and the absorbent itself is a commodity product on every CCR diver's bench. The decision that quietly shapes every CCR dive is what happens during the ten minutes a diver spends packing the cartridge.
- [How Does Decompression Work Differently on a CCR?](https://silentdiving.com/blog/ccr-decompression-ascent/): A diver who has only ever ascended through deco on open circuit can be surprised the first time they run the same depth on a closed-circuit rebreather. The clock on the wrist computer counts down, the depth gauge ticks up in slow increments, the bubbles overhead are missing, and the plan that came out of the deco software does not look like the one open-circuit divers around them are running. CCR decompression is not magic. It is the same set of physical laws applied to a loop that holds oxygen at a constant partial pressure across changing depth, which gives the planner different inputs to work with. This article walks through what changes during a CCR ascent, where gradient factors fit, how each stop is actually executed, and what happens when one of those stops will not let go on schedule.
- [What Causes Hypoxia on a Closed-Circuit Dive?](https://silentdiving.com/blog/ccr-hypoxia-causes/): Hypoxia is the most quietly dangerous failure mode on a closed-circuit rebreather. It does not announce itself with the wet, gulping breath that warns an open-circuit diver about an empty cylinder, and it does not produce the slamming alarms divers learn to fear during oxygen-toxicity drills. The loop feels normal right up until the diver feels strange, and by then there may not be enough conscious time to act.
- [What Makes Wreck Diving Different on a CCR?](https://silentdiving.com/blog/ccr-wreck-diving/): The first time a wreck diver kneels on a deck plate in 130 feet of saltwater and realizes the wreck has stopped responding to them, the change is almost spiritual. No bubbles fizzing out of the overhead. No exhaust plume scattering rust flakes from the ceiling. Just steady, warm gas circulating through a closed loop and the wreck holding still around them. That moment is the real argument for CCR wreck diving in shipwreck work, but it is only the start. A closed-circuit rebreather changes the math of bottom time, the way you trim, the way you plan gas, and the way you bail out. This article walks through what actually changes when an open-circuit wreck diver moves to a loop, where the new failure modes hide, and how AP Diving's Inspiration and Evolution platforms support the dives Silent Diving customers run on the wrecks they care about most.
- [What Limits Gas Density on a Deep CCR Dive?](https://silentdiving.com/blog/ccr-gas-density-limits/): Every gas you breathe gets heavier as you go down. A 21 percent oxygen, 79 percent nitrogen mix at the surface weighs roughly 1.2 grams per liter. The same mix at 50 meters weighs about 7 grams per liter. The mass of gas your lungs have to move with every breath grows in step with depth, and the work your diaphragm has to do to move it grows even faster. On a closed-circuit rebreather, that breathing work is not optional padding on the dive plan. It is one of the hard ceilings that decides how deep you can safely go and what gas you have to be breathing when you get there.
- [Should You Upgrade Your CCR Mouthpiece to a Bailout Valve?](https://silentdiving.com/blog/ccr-bailout-valve-upgrade/): The mouthpiece on a closed circuit rebreather decides where your next breath comes from. On a standard dive surface valve, that breath always pulls from the loop. Switch off the loop in an emergency and your only path to open-circuit gas is to remove the mouthpiece, find a second-stage regulator clipped to your harness, and put it in your mouth. A bailout valve changes that sequence. With a single thumb flip, the same mouthpiece you have been breathing on becomes an open-circuit regulator pulling from a bailout cylinder. No mouthpiece swap, no water in the airway, no scramble underwater.
- [What Happens to a CCR Between Dives?](https://silentdiving.com/blog/ccr-between-dives/): When you surface from a closed-circuit rebreather dive, your unit does not really rest. It sits under load that you no longer feel. Oxygen cells are warming up after dropping back to one atmosphere. Scrubber chemistry slows and absorbs residual moisture from your last breaths. The battery loses a little capacity. The sealed loop equalizes with the air around it. What you do during that quiet window shapes how safe the next dive will be. Most CCR incidents are not random hardware failures. They are decisions made between dives, when the rig was warm, the diver was tired, and one small skipped step let a problem mature underwater. This piece walks through the practical between-dive routine that experienced CCR divers actually follow, why each piece matters, and where a calm habit is worth more than a checklist taped to the lid.
- [How Do You Safely Recover From a CCR Loop Flood?](https://silentdiving.com/blog/ccr-loop-flood-recovery/): Closed-circuit divers fear loop floods for a reason. The unit's quiet efficiency depends on a closed gas path between the diver's lungs and the scrubber, and any water that enters that path changes the chemistry inside the canister, coats the surfaces of the oxygen cells, and forces a decision in the next thirty seconds. AP Diving's Inspiration and Evolution chassis are built around redundant valves and tight tolerances, but no rebreather is sealed against a careless mouthpiece bite at the surface or a missed pre-dive pressure check. When the loop gets wet, the diver's response decides whether it stays a minor incident or becomes a real in-water emergency.
- [What Triggers HPNS on Deep CCR Dives?](https://silentdiving.com/blog/hpns-deep-ccr-dives/): High-pressure nervous syndrome (HPNS) is the central nervous system reacting to extreme ambient pressure under a helium-based breathing mix, and on a closed-circuit rebreather it is triggered by three things working together: depth past roughly 90 to 100 meters, a helium-rich trimix diluent with little or no nitrogen to blunt the response, and a fast compression rate on the way down. Air and nitrox never reach the depths where it appears, so HPNS is functionally a deep-trimix, deep-CCR concern. Most CCR divers will never encounter it, but for anyone planning to push a closed-circuit unit past 80 or 100 meters, knowing what sets it off and what it feels like is homework done on the surface, not figured out in the water.
- [Why Do CCR Divers Run Different Setpoints?](https://silentdiving.com/blog/ccr-setpoint-selection/): Two divers can wear the same closed circuit rebreather, breathe the same diluent, and run the same depth profile yet still set their controllers to different oxygen targets. One sits on the boat at 0.7 bar partial pressure of oxygen. The other walks straight into the water at 1.3. Both are legitimate calls. Each one carries a different tradeoff between decompression efficiency, oxygen toxicity exposure, and how the cells inside the unit are behaving that day. The setpoint is one of the most powerful knobs a rebreather diver controls, and the right value is rarely the same from one dive to the next.
- [When Should You Bail Off Your CCR Loop?](https://silentdiving.com/blog/ccr-bailout-decision/): Every CCR dive has a quiet, binary question running under it: do you still trust the loop? When the answer is no, the right move is to switch to open-circuit bailout immediately. The exact failure can be diagnosed on bailout while you climb the ascent plan with your team. The diver who first asks whether to bail out has usually already crossed a threshold that should have produced a bail.
- [How Should You Configure a Dive Computer for CCR Dives?](https://silentdiving.com/blog/ccr-dive-computer-setup/): CCR divers run two information streams in parallel: the unit's onboard handset, which manages the loop and shows setpoint and PO2, and an external dive computer that runs the decompression model and stages the ascent. Both matter. Neither is optional on a real technical profile. The decision that often gets dragged into pre-dive at the last minute is how the external computer is actually configured for a CCR dive, because a wrist computer programmed like an open-circuit deco brain will produce a deco plan that fights the unit instead of supporting it.
- [Which CCR Diluent Fits Your Dive Profile?](https://silentdiving.com/blog/ccr-diluent-selection/): That last point drives one of the cornerstone safety rules in CCR planning. Your diluent has to be safely breathable on the surface and during descent, because in a worst-case electronics failure, that is what you will be breathing. The minimum oxygen fraction in a CCR diluent is generally enough to maintain a safe surface PO2, which typically means at least about 18 to 21 percent oxygen in the cylinder. Going hypoxic on the diluent during a malfunction is one of the fastest ways to lose a diver who is otherwise fine.
- [How Do You Recognize a CO2 Hit on a CCR Dive?](https://silentdiving.com/blog/ccr-co2-warning-signs/): A CO2 hit is one of the most insidious things that can happen on a closed-circuit dive. It does not ring an alarm. It does not trip a sensor warning the way a fluctuating cell can. It builds quietly while you focus on buoyancy, photography, or the next deco stop, and by the time you realize something is wrong, your judgement is already affected. Recognizing the early symptoms, and acting on them before they cascade, is one of the highest-value skills any rebreather diver can develop.
- [How Does Oxygen Toxicity Affect a CCR Diver?](https://silentdiving.com/blog/ccr-oxygen-toxicity/): Oxygen toxicity is one of those hazards that recreational divers rarely think about and rebreather divers manage on every dive. On open circuit, the gas you breathe matches the tank label. On a closed-circuit rebreather, the loop is mixing oxygen and diluent in real time to hit your setpoint, and the partial pressure of oxygen at your lungs depends on depth, setpoint behavior, cell accuracy, and a stack of small decisions that started before you ever rolled off the boat.
- [How Do You Run a Proper CCR Pre-Dive Check?](https://silentdiving.com/blog/ccr-pre-dive-check/): A CCR pre-dive check is not a paperwork ritual. It is the only thing standing between a known unit and an unknown unit, and on a closed-circuit rebreather the unknown is not survivable in the same way it is on open circuit. Open-circuit gear that fails on the surface gets caught at the surface. A rebreather that has a slow leak, a tired oxygen cell, an unflushed scrubber, or a battery that did not fully charge overnight will hide that condition until you are at depth, and by then the answer to the problem is bailout, not diagnosis.
- [What Affects CCR Scrubber Duration on a Real Dive?](https://silentdiving.com/blog/ccr-scrubber-duration-factors/): Scrubber duration is one of those numbers that sounds simple until you start planning a long dive. Your unit's manual lists a rated time. Your dive computer tracks elapsed minutes. Your training drilled in conservative limits. Then on a cold deep dive, things feel different by minute ninety, and you start wondering whether the canister you packed this morning is actually going to give you what the spec sheet promised.
- [How Much Bailout Gas Do You Need on a CCR Dive?](https://silentdiving.com/blog/ccr-bailout-gas-planning/): Bailout is the part of CCR diving that gets the least attention on a normal dive and the most attention on the dive that goes wrong. On a closed circuit rebreather, the loop quietly recycles your gas for the entire dive. The bailout cylinders on your back, on your sling, or staged on the team's frame are sitting there for the moment the loop becomes the wrong place to breathe. The honest answer to "how much bailout do I need" is rarely a single round number. It is a set of decisions that come out of the depth you are diving, how long you are staying, what decompression you owe on the way up, and how the team is set up to support each other.
- [How Long Do Rebreather Oxygen Sensors Last?](https://silentdiving.com/blog/rebreather-oxygen-sensor-lifespan/): This article walks through how Silent Diving and AP Diving think about rebreather oxygen sensor lifespan, why some cells last the full rated life and others retire early, and how to build a rotation that keeps you ahead of failures instead of chasing them.
- [What Changes After Your First 100 Hours on a Rebreather?](https://silentdiving.com/blog/first-100-hours-rebreather/): The first hundred hours on a rebreather rewrite how you dive. Up to that point you are still talking yourself through every step of the loop. By the time you log hour one hundred on a closed circuit rebreather, the unit stops feeling like an external system and starts feeling like part of how you breathe underwater. That shift is the difference between owning a rebreather and actually diving one.
- [Why Scuba Divers Switch to Rebreathers After 200 Dives](https://silentdiving.com/blog/why-scuba-divers-switch-to-rebreathers-after-200-dives/): The rebreather vs scuba decision is the moment an experienced open-circuit diver realizes that bubbles, gas anxiety, and short bottom times are no longer acceptable trade-offs, and that closed-circuit rebreather (CCR) diving is the next honest step in their career. It almost never arrives on dive number five. It arrives, with surprising consistency, around dive number 200.
- [Your Rebreather’s Real Bottom Time Isn’t on the Spec Sheet](https://silentdiving.com/blog/rebreather-bottom-time-not-on-spec-sheet/): How long you can dive with a rebreather is not the headline number in a product brochure. Real bottom time is the shortest window among your scrubber duration, onboard oxygen supply, diluent reserves, thermal endurance, and the cognitive load you carry on a specific dive. A unit rated for three hours on paper can run much shorter in cold water or under heavy workload. If you dive an AP Diving closed-circuit unit anywhere across the Americas, this is the framework that turns spec sheets into honest dive plans. This post walks through each limiting factor and explains how to set a personal bottom time you can trust.
- [How Atmospheric Diving Suits Shaped Modern Rebreather Tech](https://silentdiving.com/blog/how-atmospheric-diving-suits-shaped-modern-rebreather-tech/): Atmospheric diving suits kept humans alive at extreme depth for over a century before closed-circuit rebreathers offered a lighter, more mobile alternative. Here is how ADS engineering influenced the CCR systems divers use today.
- [Why Florida Cave Country Trains Better CCR Divers](https://silentdiving.com/blog/florida-cave-country-ccr-training/): Rebreather diving in Florida springs trains sharper closed circuit divers than ocean training because North Florida's cave country combines zero surge, crystal clarity, and a hard overhead that punishes sloppy habits on the first dive. You surface with cleaner trim, tighter gas discipline, and a feel for the loop you cannot fake in open water.
- [How Often Should You Service Your Rebreather? AP Diving Maintenance Schedules Explained](https://silentdiving.com/blog/rebreather-service-schedule-ap-diving-maintenance/): The quiet hum of your breathing loop, the steady glow of three green sensor readings, the confidence that every component is performing exactly as designed -- this is what a well-maintained rebreather feels like underwater. That assurance does not happen by accident. It is the result of a disciplined maintenance routine that begins long before you reach the dive site and extends well beyond rinsing your gear at the end of the day.
- [How to Dial In Weight and Trim on a Rebreather](https://silentdiving.com/blog/dial-in-weight-trim-rebreather/): A recent Scubapro weight pocket recall highlights why weight management is critical for all divers - especially those on closed-circuit rebreathers where buoyancy shifts constantly throughout a dive.
- [The Complete Rebreather Guide for Technical and Recreational Divers](https://silentdiving.com/blog/rebreather-guide-technical-recreational-divers/): Somewhere beneath the surface, a diver glides along a coral wall in perfect silence--no rush of exhaust bubbles, no hiss of escaping gas, just the rhythmic pulse of the reef and the quiet awareness of breathing warm, optimized air at depth. This is rebreather diving, and over the past decade it has evolved from an exclusive pursuit of deep technical explorers into a viable option for any certified diver seeking longer, quieter, and more immersive time underwater.
- [How Rebreathers Changed Underwater Filmmaking](https://silentdiving.com/blog/how-rebreathers-changed-underwater-filmmaking/): Doug Allan, award-winning wildlife cameraman and pioneer of polar videography known for The Blue Planet, has died aged 74. His legacy highlights how rebreather technology transformed underwater filmmaking.
- [Inside the AP Diving Dealer Network: Your Local Partner for CCR Excellence](https://silentdiving.com/blog/ap-diving-dealer-network-local-partner-ccr-excellence/): An authorized AP Diving dealer is far more than a retail storefront that happens to stock rebreathers. These are vetted diving professionals with direct access to AP Diving's complete product line, genuine replacement parts, and the factory-backed technical knowledge that comes from representing a manufacturer with over fifty years of rebreather engineering heritage. When you work with an authorized dealer, you tap into a support chain that extends from your local dive community all the way to AP Diving's production facility in Devon, England -- a facility audited by Lloyd's of London and holding full CE certification.
- [Rebreather Diving on Remote Reef Expeditions](https://silentdiving.com/blog/rebreather-diving-remote-reef-expeditions/): When Aggressor Adventures announced its exclusive June 2026 expedition to Tubbataha Reef alongside world-leading marine scientists, it put one of the planet's most pristine dive destinations back in the spotlight. For CCR divers, remote reef expeditions like this represent the perfect application of rebreather technology - longer bottom times, silent approaches, and gas efficiency that open-circuit divers simply cannot match.
- [Switching From Open Circuit to CCR Diving](https://silentdiving.com/blog/switching-open-circuit-ccr-diving/): The first time you hover motionless over a reef and watch a hawksbill turtle glide past without flinching -- not because you held perfectly still, but because there are no bubbles to betray your presence -- closed-circuit rebreather diving stops being a curiosity and becomes a calling. That moment of pure, silent immersion is what draws thousands of experienced recreational divers toward CCR every year. It is closer than most of them think.
- [AP Diving Dual Oxygen Controllers Explained](https://silentdiving.com/blog/ap-diving-dual-oxygen-controllers-explained/): The solenoid fires, a brief hiss of oxygen enters the loop, and your ppO2 holds steady at 1.3. You are fifty metres down a limestone wall, trimix in the loop, decompression obligations building overhead. You do not think about the oxygen controller -- you think about the wall, the plan, the team. That invisible reliability is the product of engineering choices made long before you entered the water. Not all rebreathers make those choices the same way, and the differences matter most when something goes wrong.
- [Packing and Logistics for Your First CCR Trip](https://silentdiving.com/blog/packing-logistics-first-ccr-trip/): Your rebreather sits on the workbench, freshly serviced and pre-checked. The dive bag is open on the floor. Somewhere between the O-ring kit and the third set of spare oxygen sensors, the reality of your first closed-circuit dive trip starts to feel different from every open-circuit vacation you have ever taken. Traveling with a CCR is not simply a matter of packing more gear into bigger bags -- it demands preparation that accounts for airline regulations, hazardous material classifications, consumable supply chains, and gas logistics at your destination.
- [CCR Cell Warnings: Diagnosis and Response](https://silentdiving.com/blog/ccr-cell-warnings-diagnosis-response/): The warning flashes across your handset. A single cell has drifted from the others, and the rebreather is telling you something needs attention. For many closed-circuit divers, this moment triggers a familiar question — silence the alarm and continue, or pause and investigate? The answer should always be the latter.
- [Rebreather Dive Planning: Gas and Decompression](https://silentdiving.com/blog/rebreather-dive-planning-gas-decompression/): Rebreather dive planning software must understand closed-circuit profiles: setpoint switching, diluent options, oxygen and diluent consumption, and decompression algorithms compatible with your unit. Generic open-circuit planners do not model these variables correctly. AP Diving's Projection Dive Planner and the planning modules integrated with the Vision system are designed for the platform.
- [Rebreathers and Underwater Photography](https://silentdiving.com/blog/rebreathers-underwater-photography/): Every underwater photographer eventually confronts the same frustration. You line up the perfect shot, a manta ray cruising across a sun-dappled reef, a curious hammerhead circling closer, a seahorse clinging to a gorgonian. Then your regulator fires, a burst of bubbles erupts, and the subject vanishes. Hundreds of dives, thousands of missed opportunities, all because open-circuit scuba announces your presence with every exhalation.
- [Choosing Your First CCR: What to Look for in a Rebreather](https://silentdiving.com/blog/choosing-first-ccr-what-to-look-for-rebreather/): Buying your first closed-circuit rebreather is not like buying a new set of fins. It is one of the most significant equipment investments you will make as a diver, and the implications extend far beyond the purchase price. The unit you choose will shape your training experience, determine your upgrade path for years to come, and influence where and how you can get service and support.
- [Rebreather Safety: Sensors, Scrubbers, and Bailout](https://silentdiving.com/blog/rebreather-safety-sensors-scrubbers-bailout/): Questions about rebreather safety? Silent Diving has been supporting AP Diving rebreather owners across the Americas for over 20 years. We are happy to discuss any aspect of CCR safety, from unit selection to training to maintenance.
- [Maintaining Your CCR Rebreather](https://silentdiving.com/blog/maintaining-ccr-rebreather/): Owning a closed-circuit rebreather is fundamentally different from owning open-circuit scuba equipment. An OC regulator needs an annual service and an occasional visual inspection of your cylinder. A CCR is a life support system with multiple components that require regular attention, and the quality of that maintenance directly affects your safety underwater.
- [Best Rebreather Diving Destinations](https://silentdiving.com/blog/best-rebreather-diving-destinations/): One of the most rewarding aspects of switching to a closed-circuit rebreather is how it transforms destinations you may have already dived on open circuit. Sites you thought you knew reveal entirely new dimensions when you can stay down for two to three hours, approach marine life in silence, and manage your decompression with an optimal gas mix at every depth.
- [AP Diving Inspiration Rebreather Overview](https://silentdiving.com/blog/ap-diving-inspiration-rebreather-overview/): In a market with a growing number of closed-circuit rebreather options, one product line has consistently outsold, outlasted, and out-engineered every alternative: the AP Diving Inspiration. With more units in active service than all other recreational and sport CCR manufacturers combined, the Inspiration is not just a rebreather. It is the reference standard against which every other unit is measured.
- [What to Expect from Your First CCR Certification Course](https://silentdiving.com/blog/what-to-expect-first-ccr-certification-course/): You have been thinking about it for a while. Maybe a dive buddy switched to a rebreather and came back from a dive raving about the three-hour bottom time. Maybe you watched footage of a diver hovering silently next to a whale shark and thought that is the kind of diving I want to do. Whatever sparked the interest, you are now considering your first CCR certification course, and you want to know what you are getting into.
- [CCR vs Open Circuit for Technical Diving](https://silentdiving.com/blog/ccr-vs-open-circuit-technical-diving/): If you have been diving open circuit for years and the idea of switching to a closed-circuit rebreather has crossed your mind, you have probably wondered how the two actually compare. Open-circuit scuba and CCR diving both get you underwater, but they do it in fundamentally different ways, and those differences affect everything from your gas consumption to the marine life you encounter.
- [Why Experienced Divers Switch to Rebreathers](https://silentdiving.com/blog/why-experienced-divers-switch-rebreathers/): The reef drops away below you-a wall of coral and shadow that seems to descend forever. Your bubbles rise in a steady column, each one a small betrayal of your presence. A school of barracuda hangs motionless in the blue, watching. On open circuit, you have perhaps forty minutes before your gas forces you up. The wall has barely begun to reveal itself. For experienced divers who have felt that same constraint season after season, 2026 marks a turning point. Rebreathers are no longer experimental gear for a handful of technical pioneers. They are the platform a growing number of seasoned divers are choosing for the kind of diving they have always wanted.
- [How Does a Rebreather Work and Why Divers Choose Them](https://silentdiving.com/blog/how-does-a-rebreather-work-and-why-divers-choose-them/): A rebreather works underwater by recycling the gas you breathe instead of venting it as bubbles. Each exhaled breath travels through a canister of chemical absorbent that strips out carbon dioxide, a small dose of fresh oxygen is metered in to replace only what your body actually burned, and the reconditioned gas returns to your lungs through a sealed loop. Because a diver metabolizes just a fraction of the oxygen in every breath, that closed loop lets a compact gas supply last far longer than an open-circuit cylinder ever could – which is exactly why divers choose rebreathers for extended bottom time, quiet marine-life encounters, and efficient technical dives.
- [Silent Diving at BonaireTeK 2025](https://silentdiving.com/blog/silent-diving-bonairetek-2025/): The crystal-clear waters of Bonaire are calling, and we're excited to invite you to join Silent Diving at the Caribbean's most significant technical diving event. BonaireTeK 2025, scheduled for September 27 through October 3 (6 days, 7 nights), brings together divers of all experience levels for an extraordinary week of advanced diving education, equipment demonstrations, and unforgettable underwater experiences.
- [AP Diving Rebreathers: Industry-Leading CCR Design](https://silentdiving.com/blog/ap-diving-rebreathers-industry-leading-ccr/): An AP Diving CCR is a closed-circuit rebreather built for divers who want longer, quieter, and far more efficient time underwater. Instead of venting every breath the way open-circuit scuba does, an AP Diving CCR recycles your exhaled gas, scrubs out the carbon dioxide, and precisely adds oxygen so you breathe an optimal mix at every depth. The payoff is dramatically extended bottom time, warmer and more humid breathing gas, and near-silent, bubble-free diving. AP Diving has spent decades refining this technology, and Silent Diving is the exclusive distributor of AP Diving rebreathers across North and South America.

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- [Rebreathers](https://silentdiving.com/rebreathers/): How to become a citizen of the sea
- [About](https://silentdiving.com/about/): For more than 20 years, Silent Diving has been a distributor of AP Diving rebreathers and products! We're your exclusive distributor for Inspiration, Evolution Closed Circuit Rebreathers and all Ambient Pressure Diving LTD units! We also provide replacement parts and accessories. Silent Diving is authorized to conduct scheduled maintenance, upgrades and repairs on AP Diving rebreather units. The Silent Diving team brings world-class customer care and a deeply held passion for helping to create the most innovative, boundary-breaking diving experiences imaginable.
- [Home](https://silentdiving.com/): Silent Diving services all AP Diving rebreathers. Our service options include full chassis service or service of individual rebreather parts such as first stages and ADV's to ensure that everything is in working order. We offer scheduled maintenance, upgrades, repairs. Please download and complete a service form and include it with your shipment. We strive to provide a quick turnaround time on all services performed. We encourage our divers to patronize their local dealership for servicing needs.

## Products
- [O-Ring Applicator Tool Kit for AP8 Series Mini-Cylinder Valves](https://silentdiving.com/products/o-ring-applicator-tool-kit-for-ap8-series-mini-cylinder-valves/): O-Ring Applicator Tool Kit for AP8 Series Mini-Cylinder Valves 
- [AP Tool 4](https://silentdiving.com/products/ap-tool-4/): AP100/21A SEAT TOOL
- [Perdix 3](https://silentdiving.com/products/perdix-3/): Shearwater Perdix 3 Dive Computer
- [RB13 Bump Stop](https://silentdiving.com/products/rb13-bump-stop/):   Bump stop for RB13 series AP Rebreather Cylinder Valves
- [Descent X50i](https://silentdiving.com/products/descent-x50i/): 3-INCH VIBRANT COLOR TOUCHSCREEN DISPLAY
- [RBV07A/KIT – BMCL Single Oxygen Swivel Inflator Service Kit](https://silentdiving.com/products/rbv07a-kit-bmcl-single-oxygen-swivel-inflator-service-kit/): Service Kit for the Back Mounted Counterlung (BMCL) Single Oxygen Swivel Inflator (RBV07A).
- [RBV07/KIT – BMCL Single Diluent Swivel Inflator Service Kit](https://silentdiving.com/products/rbv07-kit-bmcl-single-diluent-swivel-inflator-service-kit/): RBV07/KIT - BMCL Single Diluent Swivel Inflator Service Kit
- [GC2BKIT – Male Gas Connector & GC300 Hose Service Kit – Series B](https://silentdiving.com/products/gc2bkit-male-gas-connector-gc300-hose-service-kit-series-b/): GC2BKIT - Male Gas Connector & GC300 Hose Service Kit – Series B
- [GC1BKIT – Female Gas Connector & AP300 Hose Service Kit – Series B](https://silentdiving.com/products/female-gas-connector-ap300-hose-service-kit-series-b/): GC1BKIT - Female Gas Connector & AP300 Hose Service Kit – Series B
- [Dual Charger](https://silentdiving.com/products/dual-charger/): The Dual Charger is a genuine AP Diving product stocked by Silent Diving, the exclusive Americas distributor. Built to AP's exacting standards for reliable performance.
- [Factory Refurbished 2020 Inspiration Electronics #93](https://silentdiving.com/products/factory-refurbished-2020-inspiration-electronics-93/): The Factory Refurbished 2020 Inspiration Electronics #93 is a genuine AP Diving product stocked by Silent Diving, the exclusive Americas distributor. Built to AP's exacting standards for reliable performance.
- [Factory Refurbished 2020 Inspiration Electronics #91](https://silentdiving.com/products/factory-refurbished-2020-inspiration-electronics-91/): The Factory Refurbished 2020 Inspiration Electronics #91 is a genuine AP Diving product stocked by Silent Diving, the exclusive Americas distributor. Built to AP's exacting standards for reliable performance.
- [Factory Refurbished 2020 Inspiration Electronics #83](https://silentdiving.com/products/factory-refurbished-2020-inspiration-electronics-83/): The Factory Refurbished 2020 Inspiration Electronics #83 is a genuine AP Diving product stocked by Silent Diving, the exclusive Americas distributor. Built to AP's exacting standards for reliable performance.
- [Rebreather Lid Shipping](https://silentdiving.com/products/rebreather-lid-shipping/): The Rebreather Lid Shipping is a genuine AP Diving product stocked by Silent Diving, the exclusive Americas distributor. Built to AP's exacting standards for reliable performance.
- [FFM Adapter](https://silentdiving.com/products/ffm-adapter/): The FFM Adapter is a genuine AP Diving product stocked by Silent Diving, the exclusive Americas distributor. Built to AP's exacting standards for reliable performance.
- [AP50 Snap Connector Hose Service Kit](https://silentdiving.com/products/ap50-snap-connector-hose-service-kit/): Service kit for the AP50 Snap Connector Hose, containing all O-rings and the Schrader valve needed for routine servicing of AP inflator and rebreather gas hoses.
- [Rebreather Mouthpiece (DSV) Tool RBTOOL22](https://silentdiving.com/products/rebreather-mouthpiece-dsv-tool-rbtool22/): The Rebreather Mouthpiece Tool (RBTOOL22) is required for disassembling and reassembling the blue inhale inlet (RB160/3) on AP DSV mouthpieces. Prevents thread and component damage during one-way valve and O-ring replacement.
- [RB160Kit](https://silentdiving.com/products/rb160kit/): The RB160Kit (RB160) is a genuine AP Diving replacement part for the AP Diving equipment. Stocked by Silent Diving for fast delivery across the Americas — keep your rebreather maintained with manufacturer-original components.
- [Wrist Strap Pin](https://silentdiving.com/products/wrist-strap-pin/): AP Diving's wrist strap pin, part AP Diving. A direct replacement built to the same material and tolerance specs as the original.
- [Rebreather shipping](https://silentdiving.com/products/rebreather-shipping/): The Rebreather shipping is a genuine AP Diving product stocked by Silent Diving, the exclusive Americas distributor. Built to AP's exacting standards for reliable performance.
- [16Kg Wing Inner Bladder](https://silentdiving.com/products/16kg-wing-inner-bladder/): Factory replacement 16kg wing inner bladder for AP Diving rebreathers (AP Diving). Engineered to OEM tolerances for a direct-fit swap.
- [22Kg Wing Inner Bladder](https://silentdiving.com/products/22kg-wing-inner-bladder/): The 22Kg Wing Inner Bladder is a genuine AP Diving BCD replacement component. Bladder integrity is essential to reliable buoyancy control — replace at the first sign of wear.
- [AP Travelwing](https://silentdiving.com/products/ap-travelwing/): The AP Travelwing is a travel-friendly back-inflate BCD that folds flat for packing yet delivers full-feature buoyancy control in the water. Available in S/M and L/XL sizing, it pairs AP Diving’s proven inflator technology with a streamlined wing bladder and comfortable harness.
- [GC4B/39 GAS CONNECTOR HOSE (39″) – MALE FITTING TO 1ST STAGE END – SERIES B – 2024 ON](https://silentdiving.com/products/gc4b-39-gas-connector-hose-39-male-fitting-to-1st-stage-end-series-b-2024-on/): Route your gas supply cleanly with this AP Diving connector hose (part GC4B/39). Built for rebreather plumbing, it delivers leak-free performance at rated pressures dive after dive.
- [MALE GAS CONNECTOR HOSE END (WITH 9/16″ UNF OUTLET) – SERIES B – 2024 ON  *NEW](https://silentdiving.com/products/male-gas-connector-hose-end-with-9-16-unf-outlet-series-b-2024-on-new/): Route your gas supply cleanly with this AP Diving connector hose (part GC2B). Built for rebreather plumbing, it delivers leak-free performance at rated pressures dive after dive.
- [GCS HOSE 30″ – MALE FITTING TO 2ND STAGE END – SERIES B – 2024 ON  *NEW](https://silentdiving.com/products/gcs-hose-30-male-fitting-to-2nd-stage-end-series-b-2024-on-new/): Route your gas supply cleanly with this AP Diving connector hose (part GC2B/30). Built for rebreather plumbing, it delivers leak-free performance at rated pressures dive after dive.
- [FEMALE GAS CONNECTOR HOSE END (WITH 9/16″ UNF OUTLET) – SERIES B – 2024 ON  *NEW](https://silentdiving.com/products/female-gas-connector-hose-end-with-9-16-unf-outlet-series-b-2024-on-new/): Route your gas supply cleanly with this AP Diving connector hose (part GC1B). Built for rebreather plumbing, it delivers leak-free performance at rated pressures dive after dive.
- [FEMALE GAS CONNECTOR HOSE 30″   GC1B/30  *NEW](https://silentdiving.com/products/female-gas-connector-hose-30-gc1b-30-new/): Route your gas supply cleanly with this AP Diving connector hose (part GC1B/30). Built for rebreather plumbing, it delivers leak-free performance at rated pressures dive after dive.
- [Shearwater Teric](https://silentdiving.com/products/shearwater-teric/): The Shearwater Teric is the watch-size dive computer that proved small form factor doesn’t mean limited capability. With a vibrant AMOLED display, intuitive four-button controls, and full technical diving support, the Teric (SKU: 15001) works equally well on a recreational Caribbean dive and a 60-meter trimix exploration.
- [Shearwater Nerd 2 Fischer](https://silentdiving.com/products/copy-of-shearwater-nerd-2-fischer/): The Shearwater NERD 2 Fischer variant brings heads-up dive computing to rebreathers using Fischer electrical connectors. Identical in function to the standard NERD 2, this version plugs directly into Fischer-equipped units, eliminating adapter cables and keeping your loop clean and streamlined.
- [Shearwater Nerd 2](https://silentdiving.com/products/shearwater-nerd-2/): The Shearwater NERD 2 is the only near-eye remote display purpose-built for divers, projecting critical dive data directly into your line of sight. Designed for rebreather and technical divers who need heads-up information without shifting focus, this second-generation unit (SKU: 12501) delivers improved reliability and broader compatibility.
- [Shearwater Petrel 3 Fischer](https://silentdiving.com/products/shearwater-petrel-3-fischer/): The Petrel 3 Fischer combines Shearwater’s most advanced dive computer with a hardwired Fischer connector for rebreather integration. If you dive a unit with Fischer electrical standards, this version (SKU: 1130) gives you a direct bus connection — no adapters, no signal loss, just rock-solid data from your rebreather’s sensors displayed on a world-class screen.
- [Shearwater Petrel 3](https://silentdiving.com/products/shearwater-petrel-3/): The Shearwater Petrel 3 represents the pinnacle of connected dive computing. A stunning 2.6-inch AMOLED display delivers vibrant color and wide viewing angles underwater, while Bluetooth and wireless charging make topside management effortless. The Petrel 3 (SKU: 11301) is built for divers who want cutting-edge technology without compromising Shearwater’s legendary reliability.
- [Shearwater Swift Transmitter](https://silentdiving.com/products/shearwater-swift-transmitter/): The Shearwater Swift Transmitter adds wireless air integration to your compatible Shearwater computer. Lightweight and low-profile, the Swift (SKU: 17001) threads onto any standard HP port and transmits tank pressure data with a collision-avoidance protocol that handles multiple transmitters simultaneously — perfect for sidemount and twinset divers.
- [Shearwater Perdix 2 Ti Dive Computer](https://silentdiving.com/products/shearwater-perdix-2/): The Shearwater Perdix 2 is the workhorse of technical diving — a full-size, armored computer that prioritizes toughness, simplicity, and reliable decompression management. With a precision titanium surround and a bright, no-nonsense display, the Perdix 2 (SKU: 13302) is built for divers who put gear through punishing conditions and expect it to perform every time.
- [GARMIN Descent™ G1 Solar North America, Australia and New Zealand](https://silentdiving.com/products/garmin-descent-g1-solar-north-america-australia-and-new-zealand/): The Garmin Descent G1 Solar brings solar-charging endurance to your wrist, making it the dive computer that keeps pace with expedition-length trips. Built for divers who spend more time underwater than plugged in, this rugged GPS dive computer (SKU: 010-02604-03) delivers multi-gas support, customizable dive modes, and surface GPS navigation in a compact, solar-powered package.
- [GARMIN Descent™ G1, North America, Australia and New Zealand](https://silentdiving.com/products/garmin-descent-g1-north-america-australia-and-new-zealand/): Garmin’s Descent G1 packs serious dive capability into an everyday wearable. Whether you’re logging recreational reef dives or pushing into technical territory, this GPS dive computer (SKU: 010-02604-00) tracks it all — then doubles as your daily fitness watch between trips.
- [GARMIN Descent™ Mk3 – 43 mm, Stainless Steel with Fog Gray Silicone Band](https://silentdiving.com/products/garmin-descent-mk3-43-mm-stainless-steel-with-fog-gray-silicone-band/): The Descent Mk3 in 43 mm brings Garmin’s flagship dive technology into a refined, wrist-friendly form factor. This AMOLED-equipped dive computer delivers vibrant underwater readability with a stainless steel bezel and fog gray silicone band that transitions seamlessly from dive boat to dinner (SKU: 010-02753-03).
- [GARMIN Descent™ Mk3i – 43 mm, Carbon Gray DLC Titanium with Black Silicone Band](https://silentdiving.com/products/copy-of-garmin-descent-mk3i-43-mm-bronze-pvd-titanium-with-french-gray-silicone-band/): For divers who demand air integration in a stealth-ready package, the Descent Mk3i 43 mm in carbon gray DLC titanium delivers. This compact wrist computer pairs wirelessly with Descent T2 transmitters via SubWave sonar, giving you real-time gas data without console hoses cluttering your rig.
- [GARMIN Descent™ T2 Transceiver](https://silentdiving.com/products/garmin-descent-t2-transceiver/): The Garmin Descent T2 Transceiver turns any compatible Descent dive computer into an air-integrated system. Threaded directly onto your first stage, this compact transmitter (SKU: 010-13308-00) sends real-time tank pressure data wirelessly via SubWave sonar — no console hose required.
- [GARMIN Descent™ Mk3i – 43 mm, Bronze PVD Titanium with French Gray Silicone Band](https://silentdiving.com/products/garmin-descent-mk3i-43-mm-bronze-pvd-titanium-with-french-gray-silicone-band/): Garmin’s Descent Mk3i in 43 mm delivers air-integrated dive computing with the elegance of a bronze PVD titanium finish. With built-in SubWave sonar for wireless tank pressure monitoring, this is the computer that eliminates guesswork from gas management on every dive (SKU: 010-02753-13).
- [GARMIN Descent™ Mk3i – 51 mm, Carbon Gray DLC Titanium with DLC Titanium Band](https://silentdiving.com/products/copy-of-garmin-descent-mk3i-51-mm-carbon-gray-dlc-titanium-with-black-silicone-band/): The ultimate expression of Garmin’s dive computer line, the Descent Mk3i 51 mm with DLC titanium band pairs premium materials with professional-grade dive functionality. Every detail — from the scratch-resistant titanium band to the oversized AMOLED screen — is engineered for divers who accept nothing less than the best (SKU: 010-02752-13).
- [GARMIN Descent™ Mk3i – 51 mm, Carbon Gray DLC Titanium with Black Silicone Band](https://silentdiving.com/products/descent-mk3i-51-mm-carbon-gray-dlc-titanium-with-black-silicone-band/): The Descent Mk3i in 51 mm is Garmin’s flagship dive computer — a large-format, air-integrated powerhouse built for divers who want maximum screen real estate and every technical feature Garmin offers. The carbon gray DLC titanium case with black silicone band (SKU: 010-02752-10) handles serious depth while looking sharp topside.
- [INSPIRATION CONVOLUTED EXHALE HOSE – PRE 2008](https://silentdiving.com/products/copy-of-inspiration-convoluted-inhale-hose-pre-2008/): Genuine AP Diving inventory: inspiration convoluted exhale hose - pre 2008 (RB07B/01). Every unit is inspected to meet the manufacturer's quality threshold.
- [CYLINDER POST LOCK RING](https://silentdiving.com/products/cylinder-post-lock-ring/): The CYLINDER POST LOCK RING is a genuine AP Diving product stocked by Silent Diving, the exclusive Americas distributor. Built to AP's exacting standards for reliable performance.
- [TEKWING INTEGRATED WEIGHT HARNESS](https://silentdiving.com/products/tekwing-integrated-weight-harness/): The ELTWP Tekwing integrated weight harness adds quick-release weight pockets to AP Diving’s Tekwing system, letting you ditch lead in an emergency without fumbling with a separate belt. The harness wraps around the waist and clips into the existing Tekwing backplate setup.
- [TEAR-AID TYPE A](https://silentdiving.com/products/tear-aid-type-a/): Tear-Aid Type A instant repair patches (TEARAIDA) — peel-and-stick emergency fixes for holes and tears in fabric, rubber, nylon, and most non-vinyl materials. Airtight and watertight under pressure.
- [TEAR-AID TYPE A – 5′ ROLL](https://silentdiving.com/products/tear-aid-type-a-5-roll/): Tear-Aid Type A repair material in a full 5-foot by 3-inch roll (TEARAID). The same instant-bond technology as the individual patches, but in a continuous roll you can cut to size for larger repairs.
- [DILUENT REBREATHER VALVE – (BLACK HANDWHEEL)](https://silentdiving.com/products/oxygen-clean-rebreather-valve-black-handwheel/): The RB13/NPSM is a dedicated rebreather cylinder valve fitted with a black handwheel to denote diluent gas. Oxygen-cleaned and built for the higher service demands of closed-circuit diving, it threads directly into AP Diving rebreather cylinders.
- [Lefeet S1 Pro Dual](https://silentdiving.com/products/lefeet-s1-pro-dual/): Restore full thrust to your DPV with this precision-molded propeller (part S1 Pro Dual). Drop-in compatible with AP Diving scooters, it delivers the bite and efficiency the original provided on day one.
- [S1 Pro](https://silentdiving.com/products/s1-pro/): Power your underwater propulsion with this replacement battery pack (part S1 Pro Single). Engineered for AP Diving scooters, it delivers reliable thrust across long dive profiles without adding unnecessary weight to your kit.
- [REBREATHER MOUTHPIECE (DSV) WITH RBSM HEADSTRAP AND CONVOLUTED HOSES](https://silentdiving.com/products/rebreather-mouthpiece-dsv-with-rbsm-headstrap-and-convoluted-hoses/): The REBREATHER MOUTHPIECE (DSV) WITH RBSM HEADSTRAP AND CONVOLUTED HOSES (RB160) is a genuine AP Diving product stocked by Silent Diving, the exclusive Americas distributor. Built to AP's exacting standards for reliable performance.
- [REBREATHER MOUTHPIECE (DSV) WITH CONVOLUTED HOSES](https://silentdiving.com/products/rebreather-mouthpiece-dsv-with-convoluted-hoses/): The REBREATHER MOUTHPIECE (DSV) WITH CONVOLUTED HOSES (RB160/RB07B) is a genuine AP Diving product stocked by Silent Diving, the exclusive Americas distributor. Built to AP's exacting standards for reliable performance.
- [REBREATHER MOUTHPIECE (DSV) WITH RBSM HEADSTRAP](https://silentdiving.com/products/rebreather-mouthpiece-dsv-with-rbsm-headstrap/): The REBREATHER MOUTHPIECE (DSV) WITH RBSM HEADSTRAP (RB160/RBSM) is a genuine AP Diving product stocked by Silent Diving, the exclusive Americas distributor. Built to AP's exacting standards for reliable performance.
- [Rebreather Mouthpiece ( DSV)](https://silentdiving.com/products/rebreather-mouthpiece-dsv-new/): The Rebreather Mouthpiece ( DSV) (RB160) is a genuine AP Diving product stocked by Silent Diving, the exclusive Americas distributor. Built to AP's exacting standards for reliable performance.
- [Repair/ Service Clinic](https://silentdiving.com/products/repair-service-clinic/): The Repair/ Service Clinic is a genuine AP Diving product stocked by Silent Diving, the exclusive Americas distributor. Built to AP's exacting standards for reliable performance.
- [Between The Devil And The Deep](https://silentdiving.com/products/between-the-devil-and-the-deep/): The Between The Devil And The Deep is a genuine AP Diving product stocked by Silent Diving, the exclusive Americas distributor. Built to AP's exacting standards for reliable performance.
- [GC3A Flow Stop Service Kit](https://silentdiving.com/products/gc3a-flow-stop-service-kit/): The GC3A Flow Stop Service Kit (GC3A) is a genuine AP Diving product stocked by Silent Diving, the exclusive Americas distributor. Built to AP's exacting standards for reliable performance.
- [90M Ratchet Dive Reel](https://silentdiving.com/products/90m-ratchet-dive-reel/): The 90M Ratchet Dive Reel is a reliable line management accessory for technical and recreational divers. Purpose-built for underwater deployment and easy retrieval.
- [CONVOLUTED HOSE TOOL](https://silentdiving.com/products/convoluted-hose-tool/): The Convoluted Hose Tool (RBTOOL12) is used when customizing convoluted breathing hoses on pre-2009 AP rebreathers. Not required for units purchased from 2009 onward.
- [BMCL Inner Bag – Exhale](https://silentdiving.com/products/bmcl-inner-bag-exhale/): The BMCL Inner Bag - Exhale (BMCL) is a genuine AP Diving product stocked by Silent Diving, the exclusive Americas distributor. Built to AP's exacting standards for reliable performance.
- [BMCL Inner Bag – Inhale](https://silentdiving.com/products/bmcl-inner-bag-inhale/): The BMCL Inner Bag - Inhale (BMCL) is a genuine AP Diving product stocked by Silent Diving, the exclusive Americas distributor. Built to AP's exacting standards for reliable performance.
- [Rebreather Safety Mouthpiece](https://silentdiving.com/products/rebreather-safety-mouthpiece/): The Rebreather Safety Mouthpiece (OCB) is a critical breathing-loop component for your Inspiration. Engineered for reliable gas delivery and comfortable long-duration dives.
- [21700 5000mAh Power Battery](https://silentdiving.com/products/21700-5000mah-power-battery/): Step up your dive light runtime with the 21700 5000mAh Power Battery. Designed for high-performance torches like the DIVEPRO S26, this cell packs nearly double the capacity of standard 18650 batteries into a slightly larger form factor — ideal for divers who demand longer burn times on deep or extended dives.
- [26650 5000mAh Power Battery](https://silentdiving.com/products/26650-5000mah-power-battery/): Power your most demanding dive torches with the 26650 5000mAh Power Battery. Built for lights that draw serious current, this high-discharge cell supports up to 15A continuous draw while maintaining a full 5000mAh capacity — the go-to choice for primary dive lights that need to punch through dark water.
- [18650 2600mAh Standard Battery](https://silentdiving.com/products/18650-2600mah-standard-battery/): Keep your dive lights powered through every dive with the 18650 2600mAh Standard Battery. This reliable lithium-ion cell delivers consistent output for handheld and backup dive torches, making it an essential spare for any serious diver's kit bag.
- [Hands-Free Dive Torch Holder](https://silentdiving.com/products/hands-free-dive-torch-holder/): Mount your dive torch hands-free with this universal holder from DIVEPRO. Compatible with torch bodies from 18mm to 38mm in diameter, it clamps securely to your gear and keeps your light aimed where you need it — freeing both hands for tasks, photography, or line work at depth.
- [Quick-Release Dive Glove](https://silentdiving.com/products/quick-release-dive-glove/): Quick-Release Dive Glove
- [DIVEPRO S40 4200Lumens](https://silentdiving.com/products/divepro-s40-4200lumens/): The DIVEPRO S40 packs 4,200 lumens into one of the most compact dive torch bodies on the market. Whether you are running it as a primary light on recreational dives or a powerful backup for technical profiles, the S40 delivers serious output without the bulk. Ships with a 26650 power battery and USB charger so you can charge topside anywhere.
- [S10 1000lm Compact Diving Torch](https://silentdiving.com/products/s10-1000lm-compact-diving-torch/): 1000lm Compact Blue Diving Torch
- [DIVEPRO CL4200B 4200Lumens](https://silentdiving.com/products/divepro-cl4200b-4200lumens/): The DIVEPRO CL4200B is a professional-grade canister dive light that delivers 4,200 lumens of focused output for technical and cave divers who need reliable, hands-free illumination at depth. Shipped as a complete kit with charger, Goodman handle, and carry bag, this system is ready to dive out of the box.
- [LOW PROFILE BMCL INLET ELBOW & HOSE ADAPTOR](https://silentdiving.com/products/low-profile-bmcl-inlet-elbow-hose-adaptor/): The LOW PROFILE BMCL INLET ELBOW & HOSE ADAPTOR (BMCL) is a genuine AP Diving product stocked by Silent Diving, the exclusive Americas distributor. Built to AP's exacting standards for reliable performance.
- [BlackTip Tech Scooter](https://silentdiving.com/products/blacktip-tech-scooter/): Extend your range underwater with this AP Diving DPV component (part DX-004-11000). Built for the demands of rebreather and technical divers, it combines reliability with the streamlined profile that serious divers expect.
- [SILICONE GREASE](https://silentdiving.com/products/silicone-grease/): General-purpose silicone grease (AP70) in a 50g tube. Suitable for air-side O-rings and AP rebreather fittings such as scrubber canister O-rings and convoluted hose O-rings.
- [3 LITRE STEEL CYLINDER – BARE](https://silentdiving.com/products/3-litre-steel-cylinder-bare/): The AP Diving 3-liter steel cylinder is sold bare — no valve — for divers who already have a compatible rebreather valve assembly. Built from high-grade steel, it provides the volume and negative buoyancy characteristics preferred on AP Diving rebreathers.
- [2 LITRE STEEL CYLINDER – BARE](https://silentdiving.com/products/2-litre-steel-cylinder-bare/): Built to AP Diving's exacting standards (part 2L HP Cyl Bare), this cylinder is ready for rebreather divers who need dependable gas delivery in any environment. We stock it for fast shipping across the Americas.
- [Twinset Cambands](https://silentdiving.com/products/twinset-cambands/): AP Diving twinset cambands secure a pair of cylinders to the backplate in a doubles configuration. Available in multiple width and length combinations to fit different cylinder diameters, each band features a stainless cam buckle for tool-free tensioning.
- [OXYGEN CYLINDER STICKER](https://silentdiving.com/products/oxygen-cylinder-sticker/): This self-adhesive oxygen cylinder sticker provides clear visual identification for O2 cylinders on AP Diving rebreathers. Apply it to the cylinder body so the gas contents are instantly recognizable during pre-dive setup and buddy checks.
- [OXYGEN COMPATIBLE GREASE – 20G](https://silentdiving.com/products/oxygen-compatible-grease-20g/): Premium oxygen-compatible PFPE grease (RB72) in a convenient 20g syringe. Specially formulated for the diving industry — non-tacky, easy to apply, and safe for use on O-rings, valve components, threads, and fittings in oxygen-enriched environments.
- [INSPIRATION XPD CLOSED-CIRCUIT REBREATHER](https://silentdiving.com/products/inspiration-xpd-closed-circuit-rebreather/): The Inspiration XPD is the flagship of AP Diving's closed-circuit rebreather lineup — the largest unit in the Inspiration range, built for expedition-grade diving. With a 2.5 kg scrubber and 2 x 3 litre cylinders, the XPD delivers the longest scrubber duration and the most onboard gas of any Inspiration model, making it the go-to CCR for deep technical diving, extended decompression profiles, and multi-dive expedition days. Silent Diving is the exclusive AP Diving distributor for the Americas, and every XPD we ship is factory-configured, ready to dive, and backed by full parts and service support.
- [INSPIRATION VISION MANUAL](https://silentdiving.com/products/inspiration-vision-manual/): Sharpen your rebreather knowledge with this essential reference (part STAT77). Whether you are new to closed-circuit diving or building on years of experience, the insights here translate directly to safer, more capable dives.
- [INSPIRATION EVP CLOSED-CIRCUIT REBREATHER](https://silentdiving.com/products/inspiration-evp-closed-circuit-rebreather/): The Inspiration EVP is AP Diving's most versatile closed-circuit rebreather — a hybrid that pairs the extended scrubber duration of the XPD with the compact cylinder size of the EVO. Whether you're planning a deep wreck penetration, a week of warm-water reef diving, or back-to-back technical dives on expedition, the EVP handles all of it without compromise. As the exclusive AP Diving distributor for the Americas, Silent Diving supplies the Inspiration EVP ready to dive with full factory warranty and ongoing parts and service support.
- [BCD CONVOLUTED BREATHING HOSE – 2007 ON](https://silentdiving.com/products/bcd-convoluted-breathing-hose-2007-on/): The BCD CONVOLUTED BREATHING HOSE - 2007 ON is a genuine AP Diving BCD spare part. Keep your buoyancy compensator in peak condition with manufacturer-original components from Silent Diving.
- [Auto Air (post 2007)](https://silentdiving.com/products/auto-air-post-2008/): The AP Diving Auto Air is a combination octo-inflator that replaces both your BCD inflator and your backup second stage with a single integrated unit. The post-2007 version fits current AP Diving BCDs and provides power inflation, oral inflation, dump, and breathable air from the BCD bladder in an emergency.
- [APV300 INFLATOR](https://silentdiving.com/products/apv300-inflator/): The APV300 is AP Diving’s latest inflator valve, engineered for current-production BCDs and wings. It combines power inflation, oral inflation, and controlled dump in a refined, low-profile housing. Available in standard and Nitrox-compatible versions.
- [APV200 INFLATOR (POST 2007)](https://silentdiving.com/products/apv200-inflator-post-2008/): The APV200 is the current-generation combined BCD inflator, deflator, and emergency breathing valve for post-2007 AP Diving BCDs. Building on the proven AP200 design, it delivers power inflation, oral inflation, rapid dump, and jacket breathing in a single compact unit.
- [REBREATHER CYLINDER VALVE SERVICE KIT OXYGEN (3/4″ NPSM) WITH BURST-DISC](https://silentdiving.com/products/rebreather-cylinder-valve-service-kit-oxygen-3-4-npsm-with-burst-disc/): Oxygen-specific service kit for AP rebreather cylinder pillar valves with 3/4" NPSM thread (RB13F). Built to the same spec as the standard kit but designated for oxygen-side valve service.
- [RBV07A/DUAL/SO/35S – Dual Oxygen Inflator with Solenoid Shutoff Valve](https://silentdiving.com/products/rbv07a-dual-so-35s-dual-oxygen-inflator-with-solenoid-shutoff-valve/): The flagship oxygen inflator in the AP swivel range gives you everything in one unit: dual independent O₂ inlets for supply redundancy and an integrated GC3 Flowstop shutoff that isolates the solenoid on command. This combination is purpose-built for demanding technical profiles where both PO2 precision and fault management are non-negotiable.
- [RBV07/DUAL/SO/35S – Dual Diluent Inflator with ADV Shutoff Valve](https://silentdiving.com/products/rbv07-dual-so-35s-dual-diluent-inflator-with-adv-shutoff-valve/): The top-tier diluent inflator in the AP swivel range combines dual-inlet gas redundancy with integrated ADV isolation — everything an advanced CCR diver needs in one compact assembly. The RBV07/DUAL/SO/35S routes a dedicated feed to the ADV through an in-line GC3 Flowstop shutoff, so you can lock out automatic diluent addition whenever manual loop control is preferred.
- [RBV07A/SO/35S – Single Oxygen Inflator with Solenoid Shutoff Valve](https://silentdiving.com/products/rbv07a-so-35s-single-oxygen-inflator-with-solenoid-shutoff-valve/): Isolate your solenoid quickly and cleanly — without touching a separate valve on the hose. The RBV07A/SO/35S builds an O₂-clean GC3 Flowstop shutoff directly into the single swivel inflator, giving you one-handed solenoid lockout right at the counterlung. Essential for performing diluent flush cell-performance checks where a firing solenoid would skew your readings.
- [RBV07/SO/35S – Single Diluent Inflator with ADV Shutoff Valve](https://silentdiving.com/products/rbv07-so-35s-single-diluent-inflator-with-adv-shutoff-valve/): Gain precise control over your breathing loop's automatic diluent valve without adding extra hose-mounted isolators. The RBV07/SO/35S integrates a GC3 Flowstop shutoff directly into the single swivel inflator body, letting you disable the ADV with a quick quarter-turn after descent — then re-enable it just as easily before ascent.
- [RBV07A/DUAL/35S – Dual Swivel Inflator – Oxygen](https://silentdiving.com/products/rbv07a-dual-35s-dual-swivel-inflator-oxygen/): Maintain uninterrupted PO2 control by feeding your oxygen counterlung from two fully independent supplies. The RBV07A/DUAL/35S dual swivel inflator is built for divers who carry a primary and backup O₂ cylinder — if one supply runs low or fails, the second inlet keeps manual oxygen injection available without replumbing anything mid-dive.
- [RBV07/DUAL/35S – Dual Swivel Inflator – Diluent (for BMCL)](https://silentdiving.com/products/rbv07-dual-35s-dual-swivel-inflator-diluent-for-bmcl/): Run two completely independent diluent supplies into your breathing loop without splitters or tee pieces. The RBV07/DUAL/35S dual swivel inflator gives expedition and deep-technical divers true gas redundancy at the counterlung — each inlet feeds its own flow path, so losing one supply never compromises the other.
- [RBV07/35S – Diluent Swivel Inflator – Single](https://silentdiving.com/products/rbv07-35s-diluent-swivel-inflator-single/): Keep your diluent addition smooth and strain-free with the single-inlet swivel inflator built for AP Diving's back-mounted counterlung (BMCL) platform. The RBV07/35S replaces the older fixed RBV05 block with a 360-degree swivel that follows your natural reach, eliminating hose tension and making manual loop additions effortless — even in a drysuit.
- [RBV07A/35S – Oxygen Swivel Inflator – Single](https://silentdiving.com/products/rbv07a-35s-oxygen-swivel-inflator-single/): Fine-tune your PO2 with a manual oxygen inflator engineered for the demands of closed-circuit rebreathing. The RBV07A/35S replaces the legacy fixed inflator with a free-rotating swivel that makes oxygen top-ups intuitive — press the button from any wrist angle and the gas flows directly into the BMCL oxygen counterlung without fighting hose tension.
- [Cylinder Valve Handwheel Tool](https://silentdiving.com/products/cylinder-valve-handwheel-tool/): The Cylinder Valve Handwheel Nut Removal Tool (APTOOL5) is designed for safely removing and refitting the slotted center nut that retains the knurled handwheel on AP cylinder valves.
- [First Stage Seat Tool Set](https://silentdiving.com/products/first-stage-seat-tool-set/): The First Stage O-Ring and Seat Applicator Tool Set (RBTOOL19/SK) includes both the HPV seat applicator and the O-ring applicator for servicing the AP FS101 first stage.
- [Open Circuit Bailout Mouthpiece OC/CC Lever with single-handed operation](https://silentdiving.com/products/open-circuit-bailout-mouthpiece-oc-cc-lever-with-single-handed-operation/): Retrofit true single-handed bailout switching to your existing OCB mouthpiece. The RB116/1 lever upgrade lets you toggle between open and closed circuit by squeezing the ergonomic tab against the adjacent chrome fitting — no second hand required, even in cold-water gloves.
- [Colour Handset Cover](https://silentdiving.com/products/colour-handset-cover/): Shield your 2020VISION colour handset from knocks and abrasion with this slip-on protective cover (RBV11/30). Made from flexible rubber, it fits snugly over the handset housing without interfering with screen visibility or switch access.
- [Cam Strap](https://silentdiving.com/products/cam-strap/): Configure your rebreather for technical diving with this AP Diving Tek frame (part SDTF CS). It accommodates extra cylinders and accessories so your rig grows with your ambitions.