Mount one of these CO2 shut-off valves between your bottle valve and regulator and your worries are over. These shut-off valves connect to your ignition switch and turn on the CO2 bottle whenever your ignition is turned on, so as long as your car's on, your bottle's on. The stainless steel, 3,000 psi solenoids have high temperature seals for durability. The kits have both left and right hand thread fittings; a regulator is NOT included.