ABS & CPVC cement wonderment...

[TractorLegend]

The pipe cement cans always say "let the cement cure fully before handling".
That point seems rather obvious, yet they give no indication as to time/temp.
People would like to get the water/ sewer flowing again without pondering such nebulous matters.
How long of time is "fully cured"?

 

[GaryM]

I'm guessing that it's about 15 minutes longer than the time you allowed before turning the water back on!

In reality, I'd say 10 minutes is probably enough time.

 

[TractorLegend]

well...i did let the drain repair sit overnight and will check it after work...but i did have some leak before possibly from the "too soon" factor

 

[CurlyDave]

The pipe cement cans always say "let the cement cure fully before handling".
That point seems rather obvious, yet they give no indication as to time/temp.
People would like to get the water/ sewer flowing again without pondering such nebulous matters.
How long of time is "fully cured"?

Depends on the temperature.

I found out the hard way that at ~30 degrees, overnight is not long enough.

Pipes froze & broke at my wellhead. I replaced PVC with PVC, primed and used regular cement, not the "super hot". Let it cure overnight plus a morning and when I turned the pump on, the PVC just slid right out of the fittings. Because of the angles of the pipe, the longest piece had some leverage on it -- broke off and flew about 30'. I was lucky not to be in its way.

In the middle of summer, that would have been way longer than necessary.

 

[DUMBDOG]

What size pipe, what PSI, what temperature?

 

[_RaT_]

The pipe cement cans always say "let the cement cure fully before handling".
That point seems rather obvious, yet they give no indication as to time/temp.
People would like to get the water/ sewer flowing again without pondering such nebulous matters.
How long of time is "fully cured"?

If your using ABS, your obviously doing DWV lines. Since there is little to no pressure on these lines, there is no thrust as CurlyDave had with his PVC water line. I have often cut, glued and tested for leaks in a matter of seconds after installing. ABS bonds very fast and dries fast accelerated by the temperature. I have never had a glued ABS joint leak or fail. I am not sure why out West we use ABS and back East its all PVC DWV, but I prefer ABS for this very reason, very easy to glue becasue you don't need primer and frankly, the black looks better under the sink...

 

[turnkey4099]

I would have to dig out my can of PVC cement to look but I recall time being mentioned in the instructions. There are three different types of cement, one for each type of pipe, plus a universal one that does both pvc and cpvc, not sure if ABS is included. Use the wrong type and you can expect a failure.

The only failure I have had with PVC and CPVC was one PVC to Iron adapter that split on the cast line. My mistake as I used a female PVC adapter and apparently overtightened it. Of course it didn't let go until the middle of winter 4' underground.

Never have tried glueing in the cold but in warm weather not more than 30 seconds is needed for cure time IME.

Harry K

 

[Kendall69]

Do not pressure test until cement is fully cured, usually 24 hours.

Also here's some great info

Set & Cure Schedules

 

[_RaT_]

Do not pressure test until cement is fully cured, usually 24 hours.

Also here's some great info

Set & Cure Schedules

ABS is a whole different material. With PVC pressure fittings, the cure time varies depending on pipe size. It is one of many reasons PVC glue joints have been abandoned by utilities. Its all gasketed bell and spigot. The full cure time makes it impossible to get a repair back on line anytime soon. I routinely fully pressurize 1" and smaller after two hours.