Scuba Diving Tank Sizes

Divers direct carries 4 sizes in blue.

Scuba diving tank sizes. The capacity of a scuba cylinder is an important consideration. There is a lot of information listed on the crown of the tank and the order in which the information is listed varies from tank to tank but the codes are standardized and easy to read if you know what to look for. High pressure steel scuba tanks allow up to 3442 psi to be pumped into a cylinder while low pressure steel scuba tanks can fill up to 2640 psi. This is a benefit for some scuba divers.

Back mounted cylinders range from 45 130 cubic feet plus. Dive tank pressures span a wide range but the most common pressures are low 2400 to 2640 psi standard 3000 psi and high 3300 to 3500 psi. Steel scuba tanks are denser than aluminum tanks meaning you have to be less concerned with buoyancy issues especially at the end of a dive. Divers can choose between scuba tanks manufactured from aluminum or steel.

Pony or bailout bottles can range from 6 40 cubic feet. Steel dive tanks weigh more due to the material in which it s made requiring less weight to be used in a weight belt. There is no perfect size tank for all diving types and all divers. 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.

The size and working pressure of your scuba tank can be determined by looking at the markings on the crown of your tank.