What valves are used in the compressed gas industry?

As we know, 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. Then is there any other valves used in this Industry apart from the? The answer is obvious yes. They are the pressure seal valve, the packed valve, and the diaphragm valve.

The pressure seal valve fits inserts, oxygen and hydrogen. It is extremely reliable, very strong (used at pressures up to 6000 psig), economical, and user friendly. The packed valve fits corrosives and reactive gases. The valve is extremely rugged and its one piece stem provides positive operation. And the diaphragm valve fits highly toxic gases, high-purity gases, rare gases and prophetic gases. The replacement of elastomeric pickings by metal diaphragms gives this valve superior leak integrity at the top works of the valve and stem.