The centennial success of the Klinger KVN: the piston valve has remained tight for 100 years

Richard Klinger’s piston valve invention laid the foundation for the valve industry and has made a significant contribution to the company’s success for 100 years. With millions of users worldwide, the KVN piston valve has become an indispensable part of industrial plants, providing minimal maintenance and cost savings.

We usually make a toast to good health and a long life when a celebrant reaches the 100-year mark. In the case of the Klinger KVN piston valve, the temptation is to toast to another 100 years of tightness: the flagship product from Gumpoldskirchen has now proven itself for a century as a reliable solution wherever the highest tightness requirements apply.

Fire proof and suitable for oxygen applications
Early on in the history of the piston valve, their main application lay in steam rail traffic and the marine industries. Today, the areas of application of the Klinger KVN piston valve have expanded enormously: whether in areas where fire resistance counts, for oxygen approvals, or for keeping the air clean — the traditional product is in use in millions and comes in different connection types (flanges, sockets, internally fitted, and welded on) and designs worldwide.

Minimal maintenance effort
The KVN piston valve scores with minimal maintenance and significant cost savings. Sophisticated technology makes this possible: the sealing element is formed by a stainless steel piston, which is enclosed by two elastic valve rings. The upper valve ring ensures tightness to the atmosphere, while the lower ring reliably provides sealing in the bore. The large sealing surface of the valve rings thus results in optimal sealing. The pistons of the KVN VIII series, DN 65 to 200, are produced with a pressure-balanced design in order to enable smooth operation even at high differential pressures. Upon closing of the valve, the piston pushes any impurities that may be in the medium from the inside of the lower valve ring. As a consequence, even contaminated media can be reliably sealed off, preventing damage to the sealing surface.

Valves: meeting industrial standards
Over time, sealing materials have been adapted to relevant industry standards. However, the tried-and-tested operating principle of the sealing system is still in use today. With the KVN piston valve, Richard Klinger succeeded in inventing the classic industrial valve and laying the foundation for its pioneering role in piston valve technology. We thus also wish for the celebrant to remain an indispensable part of industrial plants for many years to come!