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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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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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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Faber Dive Tanks.
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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 item is DISCONTINUED
This is the SCUBA to Medical O2 - Adaptor & Flow Restrictor for Scuba Divers -
This is the DRIS Stainless Steel Tank Clamps for Scuba Diving.
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This 1" Tank Band is perfect for 40 and 80 cu/ft tanks.
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Protect that expensive tank valve and important o-ring with this awesome cap
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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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You spend a lot of money on your gear. Keep track of it with this great paint marker
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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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Afford to dive!
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This is the Razor Sidemount About Break Away Connector for Scuba Divers
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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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This is the Delrin Din Plug from Trident
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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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This is the 25 Piece Long-Reach SAE and Metric Hex Key Set for Divers.
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Great for night dives or low viz conditions.
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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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Don't be left out on your next dive, this is a great kit from Trident!!!
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This is the Dive Rite Deluxe Hose Retainer for Scuba Tanks.
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https://youtu.be/ONZJrufFrUQ
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This is the XS Scuba Replacement Tank Holder Kit for Scuba Divers.
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This is an inexpensive way to protect that expensive tank valve
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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 XS Scuba "V" Weight Pouch Holds up to 7lbs for Scuba Divers
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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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Great for blowing off work areas, inflating mattresses, inner tubes, etc.
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Cam bands for securing various sized tanks.
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Afford to dive
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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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This is the Sherwood Pro Valve Part Din Valve to Yoke Valve Insert
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Sale!
This is the Zeagle Tank Pouch for Scuba Divers.
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This is the Trident Deluxe Tank Carrier for Scuba Divers.