Operation Mode: Normally Closed. Baomain DC 24V Brass Electric Solenoid Valve,1 inch Normal Closed, Energy-Saving Valve for Water Air 2W-250-25J : : Industrial & Scientific BAOMAIN Brass Electric Solenoid Valve in Electricity-saving and mute, 24-Hour power supply does not generate heat. It is widely used to control the flow of various types of water in a pipeline system . It allows you to start, stop of water flowing... Operation Mode:Normally Closed 1-1/4 Solenoid Valve - Brass 12V DC Normally Closed with Viton Seal Direct Acting Valve 1/2" ZFF-04 230V AC 50/60Hz Brass Drain Valve Water Air NC Solenoid Valve Inlet/Outlet Ports:1-1/4-inch Female Threads Ensure robust control with the 1" Inch General Purpose High Pressure Brass Electric Solenoid Process Valve Normally Closed. Perfect for liquids and gases Installation: Fluid direction should be as the arrow shows Suitable Media: Water Oil Air