ITEM NAME:DC 12V 1/2" Brass Electric Solenoid Valve For Water Air N/C Normally Closed HRTS.1/2" New Electric Solenoid Valve For Water Air N/C Normally Closed DC 12V. 1 x DC 12V solenoid valve. Ports: 1/2" Inlet and Outlet Ports. Pipe size: 1/2". Material: Plastic Valve Body, Copper Joint. Usage: water, air and low viscosity fluids(It cannot be used for inflammable gas or fluids).