Aluminum Scuba Tank Sizes

Types of scuba tanks and pony bottles.

Aluminum scuba tank sizes.

Pony or bailout bottles can range from 6 40 cubic feet. How to choose the best scuba tanks size. Size of steel vs aluminum tanks. Steel tanks have thinner walls than aluminum tanks with an equal pressure rating.

Scuba cylinders are made from either steel or aluminum materials. The information below was compiled from a variety of sources including luxfer pressed steel tank catalina and oms. There is no perfect size tank for all diving types and all divers. The capacity of a scuba cylinder is an important consideration.

There are a lot of different types of tanks that can vary greatly regarding pressure and capacity. The information is believed to be accurate but is not guaranteed. A scuba tank s capacity is determined by its size and pressure rating. Pressure and size determine the volume of air a tank can hold its capacity.

Most tanks have capacities ranging from 50 to 120 cf with various compressed air pressures. 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. Compiled by huron scuba snorkel adventure travel inc. The compact aluminum tanks and the standard al100 tank have a service pressure of 3300 psi.

The capacity of any tank is measured in pressurized cubic feet. It is important to check the markings on the. A steel scuba tank is offered as a high pressure tank or low pressure scuba tank. 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.

An 80 cubic foot steel tank rated to 3000 psi will be slightly smaller than an 80 cubic foot aluminum tank rated to 3000 psi because the tank walls are thinner. The most popular tank size that is used by recreational divers is the ones that hold 80 to 100 cubic feet of air. 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. Most aluminum scuba tanks are rated for 3000 psi.

The 2640 psi low pressure steel tanks are preferred by nitrox and technical divers who expect to be blending their gases using the partial pressure method. Aluminum and steel scuba tank sizes. Back mounted cylinders range from 45 130 cubic feet plus. However you should never assume the size of your tank.

Standard aluminum tanks typically have a capacity of 80 cf with a. Low pressure lp with 2400 2650 psi standard pressure with 3000 psi and high pressure hp at 3300 3500 psi.