Scuba Tank Sizes And Pressures

Scuba tanks are rated to hold a maximum pressure given in pounds per a square inch the higher the pressure the more compressed the air inside the tank is and the stronger or thicker the tank walls must be to safely contain the air.

Scuba tank sizes and pressures.

High pressure cylinders are a new trend. Divers who engage in very deep or long dives may prefer tanks with a greater. 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. The difference between pressure volume it should be noted that the pressure of a tank is not a measure of the size or volume of a tank.

For a 6 cuft bottle this means at 3000 psi the tank contains 6 cuft of air. The information below was compiled from a variety of sources including luxfer pressed steel tank catalina and oms. The information is believed to be accurate but is not guaranteed. 12 2 litre 100 cubic foot 232 bar steel cylinder rrp.

What size cylinder do i need. Tank volume one of the most common tanks in recreational diving is the aluminum 80 which holds 80 cubic feet of air compressed to 3000 pounds per square inch psi. Making a catalina aluminium scuba cylinder. However scuba tanks are available in different materials and sizes for a variety of applications.

High pressure tanks allow for a large gas capacity in a smaller size. Difference between low pressure and high pressure tanks. For example most aluminum tanks from the smallest 6 cuft pony bottle to an 80 cuft tank have a fill pressure of 3000 psi. 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.

Compiled by huron scuba snorkel adventure travel inc. A drawback of high pressure scuba cylinders is that they require more metal to maintain the higher amount of compressed air inside. 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 most common service pressures seen in modern scuba tanks are 2640 psi 3000 psi 3300 psi 3442 psi and 3500 psi.

High pressure steel tanks will have a pressure range between 3300 psi to 3500 psi 227 240 bar. 495 you save 204 29. Cylinders provide gas to the diver through the demand valve of a diving regulator or the breathing loop of a. 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.