150 plumb. One leak. Need opinions

Dondante · Apr 1, 2019

Yes, I should have used union valves. I did on the drains but was tupid and didn't on the manifold.

Should I try and drip some glues down in this spot. Only leak I have.

It's coming up that connection from the valve.

Flippers4pups · Apr 1, 2019

At this point, attempting to reglue it is all you got.

Dry it well and glue it, let it dry completely. Hope for the best.

Pntbll687 · Apr 1, 2019

Maybe run a bead of silicone around it.

JoshH · Apr 1, 2019

You could heat the joint up with a heat gun if you have one around and wiggle the valve off. Tricky to do in a spot like that but possible. Otherwise letting it dry thoroughly and attempting to add more glue to the spot where it is leaking as mentioned above is your best bet.

Maybe if you had a long enough applicator try and open the valve all the way and use just a little bit of PVC glue or silicone on the applicator and reach up inside the plumbing and try and get it on the inside of the joint.

Dondante · Apr 1, 2019

Yeah I don't have extra unions etc. I used the extras I bought.

Dondante · Apr 1, 2019

Pntbll687 said:
Maybe run a bead of silicone around it.

Yeah 5200 or more PVC Glue is definitely my choices. If I use more PVC Glue I may not have enough room for some 5200 if the pvc glue doesn't work.

Dondante · Apr 1, 2019

JoshH said:
You could heat the joint up with a heat gun if you have one around and wiggle the valve off. Tricky to do in a spot like that but possible. Otherwise letting it dry thoroughly and attempting to add more glue to the spot where it is leaking as mentioned above is your best bet.

I can pull the manifold completely off. So I could get to it. I havent heard of this. What do I do if I heat and get it off? Sand and relgue?

JoshH · Apr 1, 2019

Dondante said:
I can pull the manifold completely off. So I could get to it. I havent heard of this. What do I do if I heat and get it off? Sand and relgue?

Exactly that. Ideally use a new valve if you have a spare one it sucks but atleast one side will have a fresh surface for the glue to soften

WVNed · Apr 1, 2019

Could you remove it and dry it and them pull a vacuum on it with a sweeper and add some glue to the spot?

jent · Apr 1, 2019

My new plumbing has unfortunately the same issue. On the manifold too. I don't really want to replace $100 worth of gate valves so I attempted to prime the joint and reglue. It still drips, but only every 10 or 20 seconds at the fastest, and also drips into the sump. I am hoping saltwater will plug it with a little time, but if not was going to try the heatgun and see if I can replace just one valve too. I did hear the fumes from heating the pvc like this are toxic and need to be vented away.

Good luck, worst case you (and me) try and are back to where we are at now...need to cut, add a unino and rebuild the manifold.

Dondante · Apr 1, 2019

jent said:
My new plumbing has unfortunately the same issue. On the manifold too. I don't really want to replace $100 worth of gate valves so I attempted to prime the joint and reglue. It still drips, but only every 10 or 20 seconds at the fastest, and also drips into the sump. I am hoping saltwater will plug it with a little time, but if not was going to try the heatgun and see if I can replace just one valve too. I did hear the fumes from heating the pvc like this are toxic and need to be vented away.

Good luck, worst case you (and me) try and are back to where we are at now...need to cut, add a unino and rebuild the manifold.

Luckily mine drips in the sump and the "salt creep" came to mind too. Lol. I'm so tired of buying plumbing and cutting and measuring. Lol.

My main valve was leaking from the knob valve. I opened the valve and taped the threads. Stopped that leak. But this one is slooooow and just sucks.

malacoda · Apr 1, 2019

Dondante said:
I can pull the manifold completely off. So I could get to it. I havent heard of this. What do I do if I heat and get it off? Sand and relgue?

I seriously doubt a heat gun will enable you to remove it. If they were merely pressed together in a dry fit and you couldn't pull them back apart, then perhaps. But after they've been glued together with PVC cement... It just ain't gonna happen.

PVC cement creates a weld. It literally melts the plastic surfaces of the mating parts, then they merge/bond together as one piece when they cure. A heat gun will most likely melt and/or warp the pieces before the welded joint gives out.

You might as well try a little PVC cement over the leak. It's on the valve-to-pipe joint, and turning the valve will create torque, so it may or may not hold.

From what I can see from the pic though, you don't have room to just cut valve out and use couples to put a new one in. Since everything is so close together and leaves no room for couples, it appears as though you'll have to replace/rebuild most of your manifold.

So, you've go nothing to lose by trying a little glue on the leak first. Just be sure you test opening and closing the valve before declaring it a success.

Dondante · Apr 2, 2019

Nurse Ned said:
Could you remove it and dry it and them pull a vacuum on it with a sweeper and add some glue to the spot?

This worked!!

Closed valve on one side and Pulled a vacuum with a shop vac. Primed/Glued, primed/glue, Prime/Glue. Let dry for several hours and just did a test on it. Success!!!

Your recommendation made me Google that and found this.

maroun.c · Apr 2, 2019

Drying and adding some.glue and wishing for the best would be ur best bet it else cutting plumbing and redoing that part would be best.

WVNed · Apr 2, 2019

Dondante said:
This worked!!

Closed valve on one side and Pulled a vacuum with a shop vac. Primed/Glued, primed/glue, Prime/Glue. Let dry for several hours and just did a test on it. Success!!!

Your recommendation made me Google that and found this.

Yay.