The Dedenbear CO2 Shut-off Valve wires right into your ignition switch and automatically turns on the CO2 bottle when the ignition is on, and off when the ignition is off. The shut-off valve Mounts between the bottle and regulator. Kit includes both left and right hand thread fittings to work with all types of regulators. This shut-off valve works just as well on either air or CO2 systems. Dedenbear has you covered with all CO2 accessory needs.