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PVC plumbing question

Old 10-10-2015, 02:15 PM
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Default PVC plumbing question

Hi guys. Just had to dig a hole and put a valve and some fittings on a 1 1/2" well pump water line. Used reg welding solvent. Temp is about 72F.

How long before I can turn on the pump?

Had to put the valve in so I can tear down the house and build another one, yet still have water to the shop and dock.

Once I jumped the gun and a fitting blew out, but I remember that was cold, like 40F.

Yesterdays story was that yes, hornets live in the ground and don't like shovels. Found out I am not allergic!!!

Doing plumbing in a hole is not fun. Had to use my shop vac to dewater the hole. I can still hear the noise, burned into my brain.

So give it a few hours?
Old 10-10-2015, 02:20 PM
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Usually a few minutes is fine. gotta bone dry, though.

Above ground pump? If so, not much stress on it.
Old 10-10-2015, 02:22 PM
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Couple minutes if you did it right!
Old 10-10-2015, 02:26 PM
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It's a submersible pump, then galv pipe into the ground, then under ground are tee's feeding the dock and shop. So I had to find the pipe beyond the tee's that lead only to the house. Took hours and lots of digging to find.

Found out that trees have roots, too. Lots of them.

I know one joint got a touch of water on it when I made it up. I seriously hope it holds up and does not leak. It was the lowest one in the hole and wrapped in roots. Here's hoping. I need a shower.
Old 10-10-2015, 02:30 PM
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A lot of variables like ambient temp, new glue? Did you use primer? Is the pipe DRY, or damp? I'll send a link to Oateys instructions. They have an app too. You don't want to do this again.
Old 10-10-2015, 02:30 PM
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The app is called Oatey cement selector. (Free).
Old 10-10-2015, 02:32 PM
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Are you by chance using the blue lava? It's more forgiving for playing in the dirt. It is a very hot cement. Feel free to PM me if you'd like. This is what I do.
Old 10-10-2015, 02:36 PM
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Thanks, too late, the deed is done other than the waiting. I used Oatey medium clear pvc cement. Glue was brand new. No primer. Pipe was dry, but when fitting, a drip of water landed right on the freshly smeared glue. Too late, went with it.
Old 10-10-2015, 02:46 PM
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Thrust block it before you put water to it. Consider mopping blue glue on the joint from the outside. Can't hurt. Let it dry as long as you can....if you don't need it till tomorrow, let it dry over nite. Leave your ditch open a couple days and watch it. Then remember where the work is. Make a map.
Old 10-10-2015, 04:29 PM
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I gots me some water!! All looks good, no leaks. Did the thrust block thing between the 90's. Just pulled it out, all ok. Then put it back in!!

Thanks, guys. Now for a shower.
Old 10-10-2015, 05:51 PM
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My rule Cut square , De Burr , Chamfer , Prime , Blur Glue Then 2 hours Minimum

I give a 5 Year warranty ... I prefer over night if client is Solvent taste sensitive ...
Old 10-10-2015, 05:57 PM
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Next time, use the primer for a better joint.

I always use the Oatey Blue Rain-R-Shine cement. http://www.oatey.com/doc/oatey-pvc-r...lue-cement.pdf It's a couple of dollars more per can, well worth it when you need it.

A couple of minutes to set up depending on temp and a couple of hours to 250 psi "Lap Shear Strength".
Old 10-11-2015, 05:58 AM
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X2 on the "Rain and Shine" blue glue. One thing I do to save money on primer is put a thin coat of glue on the male piece and immediately wipe it off with a rag. This will clean and prime it and you won't need two cans of stuff to deal with.
Old 10-11-2015, 09:35 AM
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Originally Posted by Tommysmicroskiff View Post
My rule Cut square , De Burr , Chamfer , Prime , Blur Glue Then 2 hours Minimum

I give a 5 Year warranty ... I prefer over night if client is Solvent taste sensitive ...
Ditto; doing it right beats doing it twice. And if I have questions I like to ask before I do something.
Old 10-11-2015, 09:45 AM
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Originally Posted by mikefloyd View Post
Ditto; doing it right beats doing it twice. And if I have questions I like to ask before I do something.
Fair enough!!! I figure I was doing it at least close to right as I have plumbed about 75% of this place with no issues. But I did not know how long to wait and I was not going to enjoy going in that hole again!!!

System all ok this AM.

I'm going to remember that rain and shine glue for next time.

Thanks, guys.
Old 10-11-2015, 06:17 PM
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Always use fresh glue as well. As a rule of thumb unless you're a plumber using it every day, A fresh can for every job. It still smells good but don't trust it. Fresh clue each time. For what it's worth fire protection requires let me say that again requires a fresh can of cement for a repair. Tommy knows. He's a plumber.

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