Is a White Rodgers 36G54-214 gas valve supposed to leak at the regulator vent? It is a very small leak, barely found by leak detector, but it is still there. I just want to know if I need to replace it, or is it supposed to be there?

Propane appliances should never leak anywhere. Shut off the propane to the appliance and have this immediately repaired. Also, be sure to air out your home and DO NOT use any flame until your home is properly ventilated thoroughly.

No replace it yesterday. Remember propane can be dangerous because it ignites easily and because it is heavier than air, it does not dissipate quickly, and leaks can collect in invisible, highly flammable pools.