ITEM NAME:1/2" DC 12V Electric Solenoid Valve N/C Water Inlet Flow Switch Gravity Feed New.Durable 1/2" DC 12V Electric Solenoid Valve Magnetic N/C Water Air Switch. 1x 1/2" DC 12V Electric Solenoid Valve. Valve type: diaphragm (Operated by Servo). We want to make sure you are happy with our item.