1)Explosion-proof solenoid valve 2)1/8 " ~2 " ... some special area. It can start working at zero differential pressure.1)port size: 1/8 " ~2 "2) ... 16,20,25,35,40,507) Working Pressure: 0~0.7MPa8) Max. Proof Pressure: 1MPa for NC, 0.8MPa for ... Viscosity20CST BelowWorking Pressure2W:1.0/2WH:3.5Max. Pressure ResistanceAir 0~0.7, Water 0~0.5 ... SteelMaterial of Oil SealXNBR 2-way Explosion-proof solenoid valve