Pilot-operated pressure regulator valve before-valve control

Size: DN50-250(1/2”-10”)
PN: PN16,PN25,PN40,ANSI 150~600LB
Pressure setting range: 0.01~0.12 0.08-0.25 0.2~0.5 0.45~1 0.6~2.0
Actuator: diaphragm actuator(self-operated),piston actuator(self-operated)



    pilot-operated pressure regulator (before-valve control) is composed of the control valve, actuator and a pilot used for pressure setting. It is suitable for controlling differential pressure in the pipes of non-corrosive liquids, gases and vapors. When the before-valve pressure rises, the control valve is opened.

    Trim features

    Trim features: 1、Built-in bellows provided with pressure balanced structure and high sensitivity
    2、Compact structure, reliable performance, free of maintenance
    3、The standard modular design is adopted
    4、Various combined controls can be carried out through the assemblies
    Body type: straight-through type
    Bonnet type: standard type
    heat dissipation type
    Flow characteristic: quick open
    Size: DN15-300(1/2”-12”)
    Pressure class: PN1.6、4.0Mpa(ANSI 150、300LB)
    Leakage class: ASME B16.104 Ⅴ(soft seal)
    ASME B16.104 Ⅳ(hard seal)
    Pipe connection type: flange type
    Set value error: ±4%
    Applicable temperature range: -30C° ~ 350C°
    Actuator type: diaphragm actuator(self-operated)
    piston actuator(self-operated)