HFS 110v Ac or 12v Dc Electric Solenoid Valve Water Air Gas, Fuels N/c - 1/4", 1/2", 3/4", 1" NPT Available (12V DC 1/2" NPT) This 12V DC brass electric solenoid valve easily replaces broken valves for use with water, air, and Durable brass construction and a quality copper solenoid are made to last. 1/2"NPT This valve is N/C (normally closed), meaning it is closed when power isn't supplied. The unit operates on 12V DC power and can withstand temperatures of 23F to 176F. This unit fits a 1/ We have solenoids available in AC/DC and various size NPT threads as we