Vacuum Stop Valve /CNG LNG Check Valve
*Specified valve parts ensured good sealing performance under deep cold working environment.
*Strictly treatment of vacuum, keep good insulation, very small vaporization & cold loss during low temp liquid through valve.
*Polish treatment of valve surface, pretty nice appearance.
*Non-freezing & Non-frosting for valve rod during working.
*Reasonable torque design, flexible operation.
*Valve element can be take out, convenient for fixing & maintenance.
Main technical parameter:
* Nominal Diameter: DN15--DN150
* Nominal Pressure: PN0--4MPa
* Medium for: LNG,LO2,LN2,LAr,LH2,LHe
* Material: 0Cr18Ni9
Leakage rate of vacuum inter layer : Pa•m3/s:≤1X10-10
Leakage speed rate of vacuum inter layer: Pa•m3/s:≤1X10-8
Vacuum degree of sealing: Pa:≤5X10-2
Vacuum degree under Liquid N2: Pa:≤5X10-3
Open pressure of safety device: 0.6MPa.