Originally Posted by sailor
I give up... bought another regulator from a different seller. same issue. leaks through vent when hooked to camper..what in the hell is going on..
Sailor, I realize you've posted you found a leak and fixed your concern but I want to be sure for those who later read this post know was occurring with your regulators and why they both "leaked".
In gas regulators, the vent performs TWO functions.
1. It allows the air space around the main diaphragm to move or 'breathe to atmosphere' when necessary during regulation of the main gas flow.
2. It allows an escape route for gas from the internal relief valve should the system build extreme pressure on the regulated side of the gas system.
I suspect your leak was large enough the internal relief was not or could not seat.
The system needs to maintain enough pressurization for the relief to properly seat. Your leak simply wouldn't allow that to happen.
Glad you found the culprit and didn't have any misfortune in the process.
A gas leak large enough to allow the vent to not seal could have been disastrous!