CS Piston Valve

Piston valve was innovated by replacing the disk and seat of a conventional globe valve with a cylindrical piston and two resilient, replaceable sealing rings. Constant research and development have resulted in sealing rings that provide the piston valve with an extraordinary ability to seal line pressure and prevent leakage to the atmosphere.Independent testing laboratories have subjected piston valves to API fire tests and Helium leak tests. The piston valve has out-performed other generic valve types in these tests; and these results have been consistently confirmed by extraordinary performance in customer installations.A stainless steel piston enclosed by two valve rings makes up the sealing element. The upper valve ring provides the stem seal, white the lower valve ring seals the passage. The large sealing surface on the piston and rings provides an optimal seal. When closing the valve, the piston pushes and wipes away any impurities, which might be present in the fluid, ahead of itself. Therefore media with fibrous or contaminated constituents are reliably sealed.The double guidance of the piston in the closed position prevents fluttering and vibration in the throttled position and is better able to handle turbulence in the pipeline.Once installed, the valve is absolutely maintenance free for a long time. In case worn valve rings have to be changed, this can very easily done with the valve in the line.