The Asco 8210G34 1/2" Solenoid Valve is a normally open valve designed to control the flow of air, water, or oil in HVAC and industrial systems. Operating at 120V, it offers reliable performance across pressures up to 150 PSI for air and water and 125 PSI for oil https://www.partshnc.com/8210g34-asco-12--no-0150airwtr125oil120v