Shut-off valve that is used to automate and to operate the power engineering block, in particular in the event of a failure of the piping system in the high-pressure heater and upon level rising above the permitted height.
The body is formed by a smith forging with welded body ends and a cast yoke. The seat on the high-pressure heater outlet is pressed in the body and welded with a sealing weld. The seat for the bypass line is providedwith holes andis integrated with a pressure seal bonnet in a single unit. The sealing surfaces of the seats and plugs are welded using a hard welding-on alloy. The stem nut and sealing ring of the pressure seal bonnet are made of asbestos-free material. Operating is carried out with an electric actuator.
Operation is carried out with an electric actuator.
The valves are tested with water (upon client request even by steam) for strength, impermeability, operation ability and tightness. Minimum strength testing pressure is 1,5 fold of PN.
Butt-welded as per CSN, DIN, ANSI, GOST standards.
The valves can be supplied with electric actuators of the manufacturers ZPA Pečky, Regada, AUMA, Rotork, Schiebel and others.