A diving cylinder, scuba tank or diving tank is a gas cylinder used to store and transport high pressure breathing gas as a component of a scuba set. It provides gas to the scuba diver through the demand valve of a diving regulator.
Diving cylinders typically have an internal volume of between 3 and 18 litres (0.11 and 0.64 cu ft) and a maximum pressure rating from 200 to 300 bars (2,900 to 4,400 psi). The internal cylinder volume is also expressed as “water capacity” – the volume of water which could be contained by the cylinder. When pressurized, a cylinder carries a volume of gas greater than its water capacity because gas is compressible. 600 litres (21 cu ft) of gas at atmospheric pressure is compressed into a 3-litre cylinder when it is filled to 200 bar. Cylinders also come in smaller sizes, such as 0.2, 1.5 and 2 litres, however these are not generally used for breathing, instead being used for purposes such as Surface Marker Buoy, drysuit, buoyancy compensator inflation and spare air systems.
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Perfect compact size to fit in your pocket, save-a-dive kit or dive bag.
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Compatible with both standard and DIN Regulators
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FREE SHIPPING IN THE USA This is the upgraded Spare Air Emergency Dive Tank Nitrox System
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FREE SHIPPING IN THE USA This is the Spare Air Tank 1.7 3.0 and 6.0 Emergency Rescue Kit::UpGraded
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FREE SHIPPING IN THE USA The Original Spare Air Xtreme size - the smallest, most compact tank we make! Perfect for most water emergencies where just a few extra breaths will make the difference.
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Stay down longer on your dives with these twin tank mounting bands
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FREE Shipping does not apply to these tanks in the USA CONTACT US FOR SHIPPING RATES...BOTH CANADA AND THE USA 3300 PSI Dive Tank Sherwood Dive Products:::Quality Dive Gear at Affordable Prices
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You spend a lot of money on your gear. Keep track of it with this great paint marker
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For every diver who ever took his or her gear on a dive boat or a crowded beach, this product was made for you. Fastencil, with its durable underwater paint and beautiful professional silkscreen look will let you protect, identify and label your gear with style! Finally, you don't have to graffiti your stuff with felt tip markers or messy paint bottles.
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FREE SHIPPING IN THE USA Vital in ensuring a safe and stress free diving experience for Nitrox divers.
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Cam bands for securing various sized tanks.
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This product extends air hose life, use to identify each hose. There are many colors to choose from and they fit most scuba diving air hoses. Provides color enhancement and protects hoses from abrasion
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Afford to dive with Trident
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The Vindicator was designed to be an easy to read visual safety device to prevent divers from starting a dive with their air turned partially on or turned off completely. With 9 different sized models, the Vindicator is easily retrofitted to most valves on the market. The Vindicator is an easy way to reassure yourself and fellow divers whether your air is turned on or off. Perfect for individual divers, rental departments, dive charters and open water instruction
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Safely transport tanks in your car without them rolling around in your trunk with this handy PVC tank holder.
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Protect that expensive tank valve and important o-ring with this awesome cap
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Great for blowing off work areas, inflating mattresses, inner tubes, etc.
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Protect your gear and keep your tanks from rolling around with this Hex Rimmed tank boot.
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This handy accessory attaches to any standard BCD hose fitting allowing you to inflate your tire, innertube, buoy, etc. virtually anything with a standard tire inflator nozzle, using your air tank!
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Safely transport your tanks in your vehicle or boat, save your tanks and expensive scuba gear. A fantastic value
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This simple yet effective kit allows quick and tidy set up of a stage bottle to be carried along side the torso. Neoprene band with pull tab and anti-slipping material (cylinder side) keeps hoses tidily arranged until required. Heavy duty stainless steel pipe band is enclosed in a dedicated nylon sleeve to protect the cylinder’s exterior finishing.
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The Quick Draw Pony Bottle Holder Kit allows you easy access to your Emergency Air with a quick pull of a pin.
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Attach the firefly to your tank and be seen with this bright little beacon on night dives or other low light situations.
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FREE SHIPPING IN THE USA Enjoy the advantage of a higher cylinder pressure that DIN regulators provide? Make the switch affordably with Atomics Yoke to DIN Conversion Kit.
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Stage bottle rigging for secondary bottles with a diameter of 7.25".
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Whether missing a LP Port Plug for your regulator or if you just could use one in your save-a-dive kit?
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Have all the rescue gear you need and still afford to dive!
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Afford to dive!
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Afford to dive
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This is an inexpensive way to protect that expensive tank valve
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Protect your expensive steel tank
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This great sherwood reliable 63 cubic foot aluminum tank is GREAT for most diving needs, and is little smaller than the traditional 80 cu ft tank.
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FREE SHIPPING IN THE USA The Nuvair O2 Quickstick is the first Diver Friendly oxygen analyzer available anywhere! Easy to use...effective...and amazingly affordable! The O2 Quickstick is designed for the Nitrox diver who wants the security and convenience of having his own O2 analyzer and does not want to pay a small fortune to own one.
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Free Shipping in the USA
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FREE shipping in the USA Tilos Dual Regulator Adapter YOKE
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This Tilos dual regulator adapter is the DIN version that connects the left and right modular valves together to build a manifold.
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FREE Shipping in the USA does NOT apply to this product Make sure your next dive is a safe one with this great emergency tank.
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Great for night dives or low viz conditions.
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This is the Trident Tank to Tire Inflator Yoke First Stage with Hose and Tire Connection
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Don't be left out on your next dive, this is a great kit from Trident!!!
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FREE Shipping in the USA Equalize the air in two yoke tanks with this Promate scuba tank equalizer with pressure gauge. The Tank Fill Equalizer comes with two yoke easy bleed ends with a Pressure gauge and a 60'' Hose.
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This is the Scuba Max Converter for DIN regulator to Yoke...why pay more?
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This is the Delrin Din Plug from Trident
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https://youtu.be/ONZJrufFrUQ
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Faber Dive Tanks.
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FREE Shipping in the USA This new manifold is the result of many thousands of dollars in engineering, research, and tooling development. Built with the inspiration and the tradition of the widely famous THERMO Isolation Manifold, the new XS Scuba isolation manifold retains the shape, high luster exterior plating, and interior design of the THERMO, while offering several design changes that are individually small, but collectively represent a gigantic improvement.
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Consists of a rugged, double slotted base with a removable, silicone band and stainless steel hook. The holder is designed to secure 7.25 in. (184 mm) diameter scuba tanks. It can also fit 6.9 in. (175 mm) and 8.0 in. (203 mm) tanks, though the fit will not be as optimal.
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Anyone who has had to discharge old, leftover breathing mix knows what a problem it is to keep the hiss of the released air to a reasonable level even during relatively slow discharge.
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This 1" Tank Band is perfect for 40 and 80 cu/ft tanks.
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This is the XS Scuba Replacement Tank Holder Kit for Scuba Divers.
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This is the Zeagle Compact Pony SPG Pressure Gauge for Scuba Diving Bottle Spare Cylinder.
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This is the Zeagle Tank Fill Adaptor 330-FA10-AA Connection for Standard Scuba Valve Filling Whip.
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FREE Shipping in the USA This is the XS Scuba Highland Tank Bands PAIR with Stainless Steel Buckles for Scuba Divers.
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FREE Shipping in the USA This the XS Scuba Highland Single Tank Adapter for Scuba Divers.
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This is the XS Scuba "V" Weight Pouch Holds up to 7lbs for Scuba Divers
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This is the Dive Rite Deluxe Hose Retainer for Scuba Tanks.
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This is the Gas Switch Block for Scuba Divers.
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Sale!
This is the Zeagle Tank Pouch for Scuba Divers.
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This is the Scuba Tank Cylinder Mesh Protective Cover Net for Many Different Air Bottle Types for Scuba Divers.
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FREE Shipping in the USA This is the Tiger Pony Bracket for Scuba Divers/Dive Tanks.
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This is the Deep 6 Oxygen sensor Divesoft R22S.:::::Currently Out of Stock FREE Shipping in the USA DOES NOT apply to this product
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ON BACKORDER This is the Deep 6 Divesoft Freedom Nitrox Analyzer for Scuba Divers. FREE Shipping in the USA DOES NOT apply to this product
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This is the XS Scuba Tail Weight Pouch Trim Adjustment Weight Pocket for Scuba Divers.
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This is the Sherwood Pro Valve Part Din Valve to Yoke Valve Insert
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This is the Trident Deluxe Tank Carrier for Scuba Divers.
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This is the Trident Paintball Filler for Paintballers
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FREE Shipping in the USA This is the Tank Pressure Checker Twist Bleed for dive tanks
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This is the DRIS Stainless Steel Tank Clamps for Scuba Diving.
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This is the Tank Fill Whip for Dive Tanks.
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FREE Shipping in the USA This is the Global Deluxe Nitrox/O2 Fill Whip for Dive Tanks
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This is the 25 Piece Long-Reach SAE and Metric Hex Key Set for Divers.
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FREE Shipping in the USA This is the PALM-CO Carbon Monoxide Analyzer for Scuba Divers
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This item is DISCONTINUED
This is the SCUBA to Medical O2 - Adaptor & Flow Restrictor for Scuba Divers -
This is the Pool Cleaning Bundle/Swimming
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Please be advised that tanks are expensive to ship..via UPS/FEDEX...please contact us with your zip/postal code for a shipping quote before ordering. FREE SHIPPING In the USA DOES NOT Apply to this product This is the 13 cu ft Aluminium High Pressure Spare Emergency Tank for Scuba Divers
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This is the Scuba Tank Vacuum Insulated Water Bottle.
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This is the Razor Sidemount About Break Away Connector for Scuba Divers
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This is the Innovative Scuba EZ-On Pony Bottle Holder/Mount Cam Style Bands for Scuba Divers
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This durable Cordura made expandable cargo utility pouch by xDeep brings extra storage with super easy access for sidemount divers.
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FREE Shipping in the USA This is the XS Scuba Deluxe Cylinder Equalizer with Braided HP Hose
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This is the Zeagle H. D. Pony Bottle Heavy Duty Kit Twin Mount Straps for Scuba Divers Free Shipping in the USA
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This is the Global Manufacturing Deluxe Tank Internal Inspection Light FREE Shipping in the USA