... Water solenoid valve 1. ISO 9001:2000, CE approved 2.1 million times life testing 3.compact design 4,One year gurrantee Water ... solenoid valve 2W31Characteristic : 1.Direct lifting diaphragm construction ... of DIN plug coilMedium : Air, City Gas, Water, Oil, Petroleum, etc.Temperature: NBR Seal: 14F ... 0MPa2W3125 X X XS91B water solenoid valve 2w31-compact design