solenoid valve 1. ISO 9001:2000, CE approved 2.1 million times life testing 3.Reliable quality 4,One year gurrantee, solenoid valve 2W21 Characteristic : 1.Direct lifting diaphragm construction; 2.Open from zero bar for low pressure system use 3.High frequency of DIN plug coilMedium : Water, air,gas, etc.Temperature: NBR Seal: 14F to 176F , -10 to 80 EPDM Seal: 14F to 250F , -10 to 120 VITON Seal ...