I quickly looked through google and the noshak 300 series presure switch looks like it would work, but it only goes up to 30psi. I think if I remember correctly, we need a switch to go up to 45psi. I'll have to find my notes and see. I do remember that the gov pressure is 1lb/MPH. That may be different for the gas transmissions. I'll have to get the manual back out and check that.