Hi Dominicano:

The info. Above is not correct. I think Rick meant to say that maximum temperature rating is 140 F...but not maximum working hydrostatic pressure...

Cellular core PVC is considered a NO PRESSURE PVC...so not to be used for pressure applications.

The correct answer depends on the size of the schedule 40 PVC pipe. For example at 75 degrees F, 2" sch. 40 PVC pipe can work with liquid up to 280 PSI, but 3" is only rated for 260 PSI and 4" PVC for only 220 PSI, etc. These are MAXIMUMS and again are NOT for schedule 40 cellular core DWV type PVC.

Check it out at:

http://www.charlottepipe.com/Documen...ech_Manual.pdf

See page #25 of 112...

Let me know if you need more info...

MARK