The leak was on this plenum, right in the middle on one of the tee joints
So what I did was take the plenum off (which I hope I never have to do again) and then cut a piece of spa flex so that it wraps around the pipe and fits tight to the tee. Then I primed it so it was good & soft and smeared on a thick coat of PVC cement to both pieces, put the patch in place, and held it in place with a couple of zip-ties.
I let it sit and cure for about an hour, at which time the joint between the patch and the tee was still pretty soft, but I opened all the valves so that no water was flowing past the tee and fired it up. It held, and 2 days later I cranked the valves closed and put everything under pressure and it's been fine for a couple of days now.
The sump flow is still mad. On Thursday it evaporated 3 gallons. Today I only had to add 1 gallon. Weird.
So what I did was take the plenum off (which I hope I never have to do again) and then cut a piece of spa flex so that it wraps around the pipe and fits tight to the tee. Then I primed it so it was good & soft and smeared on a thick coat of PVC cement to both pieces, put the patch in place, and held it in place with a couple of zip-ties.
I let it sit and cure for about an hour, at which time the joint between the patch and the tee was still pretty soft, but I opened all the valves so that no water was flowing past the tee and fired it up. It held, and 2 days later I cranked the valves closed and put everything under pressure and it's been fine for a couple of days now.
The sump flow is still mad. On Thursday it evaporated 3 gallons. Today I only had to add 1 gallon. Weird.



