... ~2 "2) Working Medium: air, water, oil, gas, LPG, natural gas,coal gas,firedamp3) Action Type: direct action4) Valve Body: 2W: ... close), NO(normal open)6)Orifice Size:2.5,4,,16,20,25,35,40,507) Working ... VITON or EPDM10) Working Temperature: NBR for -5~80°C; VITON for -5~150°C12)Voltage: DC12V, DC24V, AC24V, ... Pressure ResistanceAir 0~0.7, Water 0~0.5,Oil,0~0.5Operating Temperature Range-10~80°CVoltage ...