One-piece shut-off valve which is seated centrally and designed to favor flow. It is tight closing in both flow directions. The seat seal is vulcanized on a carrier ring and exchangeable.
The shut-off valve is pneumatically double- or single-actuated or can be opened or closed using spring force. It has a flange connection for clamping between flanges acc. to DIN 2501.
The pneumatic control of the actuator is optionally carried out with a directly mounted or separate 5/2 or 3/2 way valve which can be operated electrically, pneumatically or manually.
Neutral gases or liquids with a viscosity of up to 120 mm²/s can be used as flow media. It should be noted that media that increase the actuation torque require a different actuator assignment. In case of aggressive media, please refer to the material resistance tables ZXWBT343.
Shut-off valves of type PZR have the following special features as standard: