grey schedule 80 pvc

Peevee · Aug 22, 2007

I repaired a 2" service line today schedule 80 pressure. I primered the ends and coupling and waited about 20 minutes and it blew right apart. How long do you usually let something like this dry before testing. I redone everything and talked the guy into letting it dry overnight. Hopefully this doesn't happen again in the morning. I am using Oatey heavy duty grey cement.

Jimbo · Aug 22, 2007

You need to read the direction on the can. For the heavy cement, and a 2" pipe, I'm guessing they spec. more than 20 minutes. What pressure did you apply at the time??

Sponsor · 2022-01-29T12:20:58-0800

BAPlumber · Aug 22, 2007

I like to use Christie's Red Hot. depending on the temperature I wait about 30 min. and don't slam on the water. if the temp. is below, say 50F I'd wait at least an hour, freezing, 24 hours. Old cement doesn't work well. I've also found that if you bevel the pipe you will have better success, i'm assuming you ream.

I've used Oatey's heavy duty grey and was impressed with it.

Kordts · Aug 22, 2007

I use wet or dry glue, the blue goo for pvc water service. It sets in about 5 minutes.

Phil H2 · Aug 22, 2007

Typically 2 hrs. It depends on ambient temperature, pipe size and water pressure.
http://www.oatey.com/apps/catalog/instance_assets/assets/Submittal_Sheet/PVC Heavy Duty Gray.pdf

Toolaholic · Aug 23, 2007

Gray For Water???????

Grey is for electrical,and uses a different solvent.

Markts30 · Aug 23, 2007

toolaholic said:
Grey is for electrical,and uses a different solvent.

Not true - some grey is for conduit....
Other grey is for water - usually I give it a couple hours to set up - the red hot and "rain or shine" I only give 15 or so minutes...

Peanut9199 · Aug 23, 2007

I just installed Sch40 this weekend and it syas to let set for 3 hours, so i would guess it depends on the solvent.

hj · Aug 23, 2007

pvc

Sch. 80 PVC is grey, but it also takes longer to set up than Sch. 40. Electricians use the same glue as plumbers. and if they use primer it is also the same as plumber's primer.

Toolaholic · Aug 23, 2007

As a Gen. Contr. We also do our own Elec. Elec pvc is grey sch. 40 or 80.

We use the grey primer Made for this application .Are You saying there are 2 types , Water and elec.? I was told never to use grey for portable water

Mattbee24 · Aug 23, 2007

Just to be sure, you said you primed both the pipe and couplings, but you never said anything about glue. Maybe it's just a given that you glued them after you primed them. But After 11 years of working at a plumbing shop, I have seen it all and just have to ask.

Mattbee24 · Aug 23, 2007

Toolaholic,
There is both schedule 80 pvc and cpvc that is used for plumbing. Both are grey. Though they are mostly used in commercial applications.

Toolaholic · Aug 23, 2007

Thank's Matt

This is why I love these Forums, Never stop learning

hj · Aug 23, 2007

cement

Gray PVC cement is a very thick slow setting material. So it needs a lot of time to cure before pressuization.

grey schedule 80 pvc

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