RELIAN Electric Solenoid Valve 3/4 Inch 12V DC Water Air Gas Normally Closed Replacement Brass Valve for Use with Pipelines in Water Air and Diesel Applications Medium: Air, water, Oil.The solenoid valve should be installed horizontally. Material: Brass. Type: Normal Closed. Acting Motion: Direct action. High quality replacement part for use with pipelines in water, air and oil applications.