... life testing 3.Reliable quality 4,One year gurrantee, solenoid valve 2W21Characteristic : 1.Direct lifting diaphragm construction; 2.Open from zero ... 1,1 1/4,1 1/2,2Port Thread: BSPP ,BSPT ,NPT ,Flange, UNF, M8X1Orifice (mm): 12,15,20,25,32,40,50Voltage: DC - 12V,24V AC - 24V ... ,120V, 240V@60HZ 110V, 220V@50HZ Tolerance: +/- 10%Coils : S51B, 40VA(AC), 30W(DC), IP65 100 ...