Double-diaphragm micro pressure regulator valve

Size: DN20-100(3/4”-4”)
PN: PN16,PN25,PN40,ANSI 150~600LB
Pressure setting range:0.4~0.5 5~10 9~14 13~19 18~ 24 22~28 27~33 36~44 42~51 49~58 56~66



    double-diaphragm micro pressure regulator is composed of the control valve, actuator, pilot, pressure spring and other parts. It is mainly used to maintain constant pressure of the protection gas (generally nitrogen) at the top of the container, so as to prevent materials in the container from contacting the air, avoid volatilization and oxidation of materials and protect the safety of the container. It is especially suitable for gas sealing protection systems of various large-sized storage tanks.

    Parameters of control valves

    Trim features: ttop guided, balanced trim
    pilot type structure
    Body type: straight-through type
    Bonnet type: standard type
    Flow characteristic: quick open
    Size: DN15-100(1/2”-4”)
    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: ±8%
    Applicable temperature range: -30C° ~ 150C°
    Actuator type: diaphragm actuator(self-operated)