Voltage: 110V-120V AC Volts. Operating Type: Diaphragm Valve Diaphragm/Seals: NBR Pressure Rating: Air: 110 psi / Water: 75 psi / Light Oil: 60 psi Suitable Applications: Air, Water, Oils. CV Rating 12 Max Temp 170F. Fast valve response with 100% Duty Rating. Features: 1. Two position, two way, normal close switch, magnetic solenoid water valve. 2. Horizontal installation 3. Used to control automatically the liquid and gas in the pipeline. 4.Good copper material, crush resistance, crack leak proof, safe non toxic and long life. 5.Suitable for medium with gas, water, oil and gas. Solenoid valve working principle: Normally closed: When the coil is energized, the p ilot spool is closed, the p ilot hole is opened, the upper chamber of the valve is relieved, the piston is pushed by the medium pressure of the lower chamber, and the solenoid valve is opened. When the coil is de-energized, the p ilot spool is reset by the spring, the p ilot hole is closed, the upper chamber of the valve is pressurized by the piston orifice and the thrust of the return spring, and the solenoid valve is closed.