In 1922, Richard Klinger invented the piston valve 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. Because of the exceptional performance under pressure, over 60 millions Klinger piston valves are in service worldwide.
An Extraordinary Sealing System: Amazingly Simple and Reliably Tight
A stainless steel piston enclosed by two valve rings makes up the sealing element. The upper valve ring provides the stem seal, while 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.
Excellent Control Characteristics
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. The KVN is ideal for the bypass around a modulating control valve.
The Valve Stays Inline While Changing the Valve Ring
Once installed, the valve is absolutely maintenance free for a long time. In case worn valve rings have to be changed, this is very easily done with the valve in the line.
- Reliable, leak-tight shut off – in line and to the atmosphere
- Unique robust construction principle
- No wear on sealing surfaces
- Insensitive to impurity
- Long service life and optimised life cycle costs
- Excellent regulation of flow
- Maintenance free
- Slightest emissions (TA-Luft, EPA) – increasing plant efficiency and reducing loss of operating media
- Valve remains in line if replacement of seat rings and internal parts are necessary
- Designed for automation using electro-mechanic or pneumatic actuators
- Steam and superheated water
- Miscellaneous types of gases (e.g. Oxygen, Hydrogen, Nitrogen, etc.)
- Heat transfer oils
Fields of operation:
- District heating
- Steel production
- Production of tobacco
- Food and beverage
Campbell-Sevey is proud to be a supplier of Klinger’s superior line of piston valves. Contact us to determine which is the right valve for your application.