Solenoid valve. 1.Imported coil. 2.Pilot TIG seals. 3.Valve body stainless steel. 4.Import diaphram:1,500,000 times. ... period, if there is any problem with the membrane, solenoid coil and pilot, we shall exchange free.After the warranty period of ... the products, we supply you the valve accessories--imported membrane, solenoid coil and pilot at preferential price, if there is any ...