The Klinger actuated valves have the piston sealing system which ensures tightness and at the same time precise control flow, its actuator is driven by a pneumatic spring long durability and robustness, the result of these features is a solution needs durable and low maintenance costs. Compatible with various types of positioners, solenoids and other accessories, They may be used in pressures of up 40 bar and to exchange their sealing rings can be made with the installed valve.