Low Power Consumption Solenoid Uxcell Miniature Solenoid Valve 2 Way Normally Closed DC 12V 0.2A Industrial Air Gas Valve It will become hot when it works because there are so many coils inside. Aazon.co: uxcell DC12V G3/4 X 12 Barb Plastic Water Electric... Note : Wires are not divided for +/- connecting , both can do. uxcell DC12V G1/2 ale Thread Plastic Water Electric Solenoid Valve Power off : way closed ; Power on : air can pass., Wire Length: 11cm / 4., 3inch ; Package Content: 1 x Solenoid Valve Package Content: 1 x Solenoid Valve Mini Solenoid Valve Normally Closed DC12V Reliable, compact, and simple to install. Widely used in automatic control equipment. Can be used for gas valve and pump.