Pilot Controlled Check Valves

We are offering pilot controlled check valves. The main valve by valve, the main valve plate, piston, cylinder liner, springs and other parts. Mainly by the pilot valve seat, valve, diaphragm, spring, adjusting springs and other parts. Set by adjusting the outlet pressure adjusting spring pressure, outlet pressure sensing diaphragm use change, driven by the pilot valve opening and closing the main valve piston regulator over the size of the flow restrictor parts of the area, to achieve vacuum regulator function.
The main steam valve internal thread used for steam piping, vacuum regulator role play.