1.CE/ISO9001:2000. 2.Normally open solenoid valve for gas detector. 3.Manual reset. 4.Ex. Class:ExmIIT4/ExdIIBT4 5.IP65. The solenoid valve have the following specifications: Orifice size (mm)1520253240506580100150200MediumNatural gas, liquefied petroleum gas, coal gasMedium Temp. (°C)–10 C~60 CMax. Operating Pressure50KPa10KPa500mbar or 4barVoltage (V)DC9V~12 PulseAC220, DC24 PulseCurrent1.5A ( ...