Scuba Diving Tank Sizes

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

Scuba diving tank sizes.

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. 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. Steel dive tanks weigh more due to the material in which it s made requiring less weight to be used in a weight belt. This is a benefit for some scuba divers.

Divers can choose between scuba tanks manufactured from aluminum or steel. 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. Smaller than an aluminum tank of the same capacity a steel scuba tank is a more compact air supply solution a fact that becomes doubly important for twin tank setups. The capacity of a scuba cylinder is an important consideration.

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. How to choose the best scuba tanks size. Divers direct carries 4 sizes in blue. Back mounted cylinders range from 45 130 cubic feet plus.

Pony or bailout bottles can range from 6 40 cubic feet.