thanks for the replies thus far.
I found out today that the high pressure propane regulator is 10 psi.
A lot of the gas valves are in CW or .5 psi... really low pressure.
Will any of them hold 10 psi?
If not I am not sure what other options I have.
I was looking at mechanical gas fryer control valves... but again .... they are rated at .5 psi.