Features: Direct acting normally close 2 position 2 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 brass material , 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: Brass Type: Normally Close Type Connector size: G1/4" (12mm) Temperature resistance: -5~80℃ Suitable Medium: Water, Air Size: 7.5 x 4.2cm / 2.95 x 1.65in Weight: 316g Package included: 1 x Electric Solenoid Valve Note: 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. .