mdk0420
Well-Known Member
Hello. I'm installing a gas line running from the meter to my combi boiler. I've been tackling some leakage here and there as I work on other things for the project. The gas line is ran all the way to the boiler itself. I popped a cap on it and wanted to leave it pressurized until the inspector gets out here because if I don't lose any air by then, there is no chance I'm getting a leak.
When I pressurized it I've found a couple of leaks, one being where the end cap is where there were damaged threads on the nipple (Got a replacement and no leaks now), and the other on the pressure gauge female end that screws into my gas line. I got about a 2-3 PSI drop in a couple of hours when I went to test this. I tested with the leak detector stuff on all the fittings and pretty much instantly the two spots mentioned started bubbling up and I tightened them down.
I re-pressurized the system to 15 PSI and it has been about 24 hours and I lost 1 PSI. I went to test them all and I'm not getting any bubbles out of any of the fittings. I thought after 10 minutes or so it would show up since it was a smaller leak and the last test showed right away. Nothing. I gave it another 20 minutes and I still see no bubbles. There are a couple of really really small bubbles (Doesn't seem to matter what I do I can't seem to spray on the fitting without it catching some air) but they never get any bigger. Not really sure how else to test this 1 PSI drop. I know temp differentials can make the PSI fluctuate but it's actually hotter today then it was yesterday. I've tapped the pressure gauge at the beginning end when I saw the 1 PSI drop. Is there anything else to account for?
When I pressurized it I've found a couple of leaks, one being where the end cap is where there were damaged threads on the nipple (Got a replacement and no leaks now), and the other on the pressure gauge female end that screws into my gas line. I got about a 2-3 PSI drop in a couple of hours when I went to test this. I tested with the leak detector stuff on all the fittings and pretty much instantly the two spots mentioned started bubbling up and I tightened them down.
I re-pressurized the system to 15 PSI and it has been about 24 hours and I lost 1 PSI. I went to test them all and I'm not getting any bubbles out of any of the fittings. I thought after 10 minutes or so it would show up since it was a smaller leak and the last test showed right away. Nothing. I gave it another 20 minutes and I still see no bubbles. There are a couple of really really small bubbles (Doesn't seem to matter what I do I can't seem to spray on the fitting without it catching some air) but they never get any bigger. Not really sure how else to test this 1 PSI drop. I know temp differentials can make the PSI fluctuate but it's actually hotter today then it was yesterday. I've tapped the pressure gauge at the beginning end when I saw the 1 PSI drop. Is there anything else to account for?