Bad Check Valve?

[TimmyR]

New issue.

I have 2 LP regulators and each is split with individual shut-off valves with built-in check valves. When I pressurize one of my regulators let it stabilze then back off the pressure, I hear a hissing sound. It seems like I am getting back-pressure off one of the kegs with a bad check valve because it only happens when I back off the pressure. If I close the suspect valve the sound disappears. If I lthen let some pressure off that keg then dial up the pressure and reopen the valve...voila, sound disappears (same as if I close shutoff on that line) .

Seems like a stuck or faulty check valve in my shutoff valve....any other thoughts?

[BDawg]

Sounds right to me. Do the soap bubble test to be sure, though.

[TimmyR]

Right on BDawg...already soaked the assembly with StarSan...not really sure where the gas would go on a back-pressure off the keg, except maybe out the pressure relief valve or into the keg

Anyway, just to be sure I am going to pull that line this weekend and replace the check-valve....more to follow for anyone who cares.

Good news is I still have CO2 and a b/u bottle. More importantly my batch of Blowing Monk is almost done fermenting out at 82 deg F and I should have a keg available by the end of the night I hope

Thanks man....

[TimmyR]

Swapped valves and think I got it. Thanks.