Standard Scuba Tank Size

Cylinders provide gas to the diver through the demand valve of a diving regulator or the breathing loop of a.

Standard scuba tank size.

The most popular tank size that is used by recreational divers is the ones that hold 80 to 100 cubic feet of air. Pony or bailout bottles can range from 6 40 cubic feet. Standard aluminum tanks typically have a capacity of 80 cf with a. The capacity of a scuba cylinder is an important consideration.

Most tanks have capacities ranging from 50 to 120 cf with various compressed air pressures. The al100 and some of the larger capacity high pressure tanks such as the hp117 and hp133 are also 8 inches in diameter although the hp120 is a 7 inch tank. Compiled by huron scuba snorkel adventure travel inc. The size of a scuba diving tank will determine its capacity which is an important consideration.

There is no perfect size tank for all diving types and all divers. Tank size is an important consideration for young or small divers who may find that standard or large tanks bang into their heads or legs underwater. Capacity calculations ignore the facts that it is nearly impossible for a diver to empty the residual gas in a scuba tank below about 150 psi 10 bar due to regulator flow restrictions and that pressure gauges can be significantly inaccurate so best practice is to always plan your dive with a generous reserve. Back mounted cylinders range from 45 130 cubic feet plus.

A diving cylinder scuba tank or diving tank is a gas cylinder used to store and transport the high pressure breathing gas required by a scuba set it may also be used for surface supplied diving or as decompression gas or an emergency gas supply for surface supplied diving or scuba. A scuba tank s capacity is determined by its size and pressure rating. Most primary tanks aluminum or steel are the common diameter of 7 inches. 80 cubic foot tanks are the most popular among recreational divers and are also the most commonly found tanks on the water.

How to choose the best scuba tanks size. Standard psi in an aluminum scuba cylinder is 3000. Low pressure lp with 2400 2650 psi standard pressure with 3000 psi and high pressure hp at 3300 3500 psi. There are many sizes of scuba tanks but you will find common standards throughout the industry.

It is the same physical size as the aluminum 80 but holds more air. The information below was compiled from a variety of sources including luxfer pressed steel tank catalina and oms. Tank diameters are a more significant consideration.