This is two position two way plastic solenoid valve, the material is made of ABS engineering plastics or other antisepsis likes nylon, which is applied to industrial fields, it can discharge the sewage from industy production. Specification: Model 2W-15SM 2W-20SM 2W-25SM Working Medium Water,Liquid Joint Pipe Bore 1/2" 3/4" 1" Orifice Size(mm) 15 20 25 Cv Value 4.8 7.6 12 Working Temperature 0~50 ℃ Working Pressure Normally Closed(N/C):0~7Mpa Normally Opened (N/O):0~6Mpa Body Material PA Sealing Material NBR Protection Class IP65 Grade L(mm) 74 70 87 H(mm) 115 115 125 Power 220V-230V AC/50HZ 22VA:DC24 18W:DC12V