Which PVC glue (1 Viewer)

[inigomontoya]

I am continuing to have some plumbing issues with my tank and doing another reconstruct this weekend. The bulkheads have split again at the bottom and I believe it's these damn threaded pvc adapters being too thick and causing the bulkhead to eventually develop fine cracks and leak. Kind of weird but only thing that makes sense.
With that, I am going to a slip bulkhead and also using flexible pvc-only reason for threaded was to save the bulkhead in case a leak developed and since it is the leak...
For those who use slip bulkheads and pvc have you been using regular oatey pvc glue or using the oatey abs to pvc glue (the green one)? The flex pvc will make the turn there so much easier since everything is also already in place and will be difficult to navigate but I only want to do this once and want the best glue. Curious what people are using or if anyone has noticed a difference. And yes, I will definitely be using a primer.

 

[txmarlin]

I only use the Oatley in red can -medium and no primer needed
YouTube it has lots of videos
It's all I use unless I'm in mud with dirty pipe.
I put glue on both Male and female and twist a 1/4 turn and let sit for 30 min if possible and like magic no leaks

 

[steveb]

I use the transition glue (abs to pvc) green label. Have also used the all purpose red label stuff to.

 

[tektite]

I've used regular pvc cement for slip bulkhead plumbing, no leaks.

 

[Diesel]

If you do repairs on already installed pipe work and still deal with some moist surfaces you can use
as I recommend PVC Rain-R-Shine Blue Cement, we repair irrigation but also pool pressure pipes with this stuff underwater.
All you need to do is twist it 1/4 of the pipe hold it 10 sec and done with it.

Also developing of fine cracks in bulkheads can be caused by pressure on the bulkhead it self.
If you install and glue some pvc pipes on the bulkhead and it has some side pressure there's a change you can have little tiny hairline cracks.
Just enough to have a small slow drip.

 

[steveb]

Jeff are your bulkheads schedule 40 or schedule 80?

 

[inigomontoya]

Thanks guys, Ben that's what it is doing, but there is no side pressure- just a small drop and then running down to a t. I think the spaflex may help with any pressure as well as getting rid of the threaded adapter. I do have the rest of the pipe supported by clamps of some sort. All the repairs will be dry- between the unions and draining the overflow completely I should be able to work totally dry surfaces.

Steve, I believe the bulkhead is ABS, rest of the pipe is pvc 40. That's why I was thinking of the green can you showed- already have it for the adapter from my pump and that sealed well.

 

[DustinB]

What were you using to seal the threads on the threaded fittings? If you are using teflon tape that is understandable as you have to get them pretty tight to not leak, over time that can cause the bulkhead to split as the PVC fittings are tapered. I've always used Rectorseal T-plus-2 to seal my threaded fittings, you don't have to over tighten the fittings with this stuff. Never had a problem with splitting or cracking bulkheads.

Other than that, I concur with what everyone else said. Standard pvc primer and glue, fire everything back up 30 minutes later.

 

[steveb]

Jeff are your bulkheads schedule 40 or schedule 80?

my bad.... meant regular black ABS or schedpule 80 PVC

 

[Gomer]

I have 12 slip bulkheads and I used this not a single leak.
I just followed the instruction, I prepped each section with emery cloth, used the cleaner in both parts letting it dry completely. Then adding a coat of glue to the pipe then inside the bulkhead, then a second light coat on the pipe, slid the joint together twisted it a 1/4 turn. With the vertical bulkheads I held the joint together by hand for about 5 min as they wanted to slide apart, I am guessing the glue made the ABS real soft more so than typical PCV to PCV connections.
let me know if you would like any help.

 

[inigomontoya]

I actually did use the Teflon paste, it had been leaking on my primary drain so I did tighten as much as possible. Thanks for the offer to help, should be ok. Biggest headache will be getting the water weld cast off I used to try and stop the leak, ugh

 

[Mark L.]

For threaded connections I use a small bead of silicon around the threads. When you screw them together it forms an internal thread seal without putting pressure on the threads. For slip bulkheads I use just regular all purpose glue.

 

[steveb]

I actually did use the Teflon paste, it had been leaking on my primary drain so I did tighten as much as possible. Thanks for the offer to help, should be ok. Biggest headache will be getting the water weld cast off I used to try and stop the leak, ugh

I had that happen with .75" ABS bulkheads on my big tank. Never had an issue with the 1" or 1.5" threaded. I ended up pulling them out, cleaning them with a wire bristle brush and then putting pvc glue on the the threads (male/female) and tightened very very quickly. worked like a charm but at that point your doing a slip connection anyway.

My hypothesis was that the bulkhead threads were not deep enough and did not have enough taper.