... normally closed, 3/8", 3/4", 1", 1¼",1½",2" pipe size;2.Operating mode: direct acting;3.Orifice:16, 20, 25 ... , 32, 40, 50;4.Fluid media: air ,water, oil, gas;5.Fluid temperature:0 ... : Forged brass, cast brass(for orifice:Φ32, 40, 50 only);8.Brass series solenoid valve with CE TUV, ISO9001 approvement. Normally Closed|Open 2 Way Brass Electric Solenoid Valve