Zimm0who0net
Member
I've got a fairly small plumbing system that I just put in a guest house we're building. 2 bathrooms, a bar sink and a laundry. It's generally PEX-A with some copper stub-outs. To test, I turned the system on, then turned off the main ball valve and I've been watching for pressure loss. It started 3 days ago at 58 psi and it's now at 54 psi.
So my guess is that I've got a small leak somewhere, but I've been to every fitting trying to feel for water and can't find anything. This is a brand new system and there's a ton of air in the line (especially at the dead end stub outs). I tried purging where possible, but it's not possible everywhere. I'm wondering if maybe the air in the line is dissolving into the water causing a very very slow pressure drop?
I don't think it's temperature related because as I watch throughout the day it doesn't seem to ever go up...
My little test setup has an industrial pressure gauge along with an air fitting, so theoretically I could put compressed air into the line as well, but I've been a bit nervous to go over the 58psi that my city water is at for fear of blowing out shower or wall-mounted faucet valves.
So my guess is that I've got a small leak somewhere, but I've been to every fitting trying to feel for water and can't find anything. This is a brand new system and there's a ton of air in the line (especially at the dead end stub outs). I tried purging where possible, but it's not possible everywhere. I'm wondering if maybe the air in the line is dissolving into the water causing a very very slow pressure drop?
I don't think it's temperature related because as I watch throughout the day it doesn't seem to ever go up...
My little test setup has an industrial pressure gauge along with an air fitting, so theoretically I could put compressed air into the line as well, but I've been a bit nervous to go over the 58psi that my city water is at for fear of blowing out shower or wall-mounted faucet valves.