Cylinder Valve

Cylinder Valve

Cylinder valves are required by most compressed gas cylinders. This valve allows the cylinder to contain gases and allows gas to be filled into or emptied from the cylinder. There are three basic valves used in the compressed gas industry. They are the pressure seal valve, the packed valve, and the diaphragm valve.

The pressure seal valve fits inerts,oxygen and hydrogen.It is extremely reliable, very strong (used at pressures up to 6000 psig), economical, and user friendly.This is a very reliable valve for non-corrosive and high purity products. However, the design makes this valve inappropriate for corrosives and ultrahigh-purity products.

The packed valve fits corrosives and reactive gases . The valve is extremely rugged and its one piece stem provides positive operation. This strength and the metal sealing allow this valve to be used in the most severe services. The simple design makes this valve very reliable.

The diaphragm valve fits highly toxic gases, high-purity gases, rare gases and pyrophoric gases.The replacement of elastomeric packings by metal diaphragms gives this valve superior leak integrity at the top works of the valve and stem. This is why shipping regulations require diaphragm valves on most poisonous gas cylinders. The valve shave no threads or lubricants in the gas stream to generate particles or contaminate the gas.