Features:Direct acting normally close 2 position2 way Electric Solenoid Valve, quick change direction and high sensitivity.Compact structure, small size, light weight, easy to assemble and dismantle;Valve body is made of brassmaterial, electromagnetic coil heat resistance grade is B, and with standard seals.Suitable for a variety of working media, such as water, air.The coil protection grade is IP65.Specifications:Valve material: BrassType: Normally Close Type Connector size: G1/4" (12mm)Temperature resistance: -5~80Suitable Medium: Water, AirSize: 7.5 x 4.2cm / 2.95 x 1.65inWeight: 316gPackage included:1 x Electric Solenoid ValveNote:1.The outlet water of the solenoid valve cannot reflux, and the check valve shall be installed if want to achieve backflow effect (check valve not included)2 .The two wires are same, no distinction between positive and negative..