... 3/8,1/2,3/4,1,1 1/4,1 1/2,2 2/2 way solenoid valve 2W21 Characteristic : ... 1.Direct lifting diaphragm construction; 2.Open from zero ... Size: 3/8,1/2,3/4,1,1 1/4,1 1/2,2 Port Thread: BSPP ,BSPT ,NPT ... Closed , with Coil S51B /SD01B/SD02B 2/2 way solenoid valve 2W21 Port SizeOrificeCvMin PressureMax PressureSealsMaterialBody MaterialValve BodyCoilAC( ...