Air Water Oil Solenoid Valve 2-way normally closed/open Pipe size:3/8" ~ 2" ... TUV certificates Gas/ Water /Oil Electric Solenoid Valve1. 2/2-way normally closed, 3/8", 3/4", 1", 1¼",1 ... ½",2" pipe size;2.Operating mode: direct acting;3.Orifice:16, 20, 25, 32, 40, 50;4.Fluid media: air ... series solenoid valve with CE TUV, ISO9001 approvement. 2 Way 2 Position Stainless Steel Gas|Water|Oil Solenoid Valve