TPRV drain pipe Question

[James L. Keilson]

I know this has been discussed before, however, I'm being challenged by the plumber (via the seller). The question: Is there pvc rated for tpr drain lines? The plumber says its fine. It was my contention that it was not, and had to be hard pipe. I told the seller that if the plumber says otherwise to please provide me with some documentation to update my records....Thanks for your help!

[Stephen W. Stanczyk]

CPVC is approved but not regular pvc.

[KEVIN WOOD]

The tprv drain pipe can be made of plastic but it must be rated for the water pressure and temperature.This is stamped along the length of the pipe.

[clambert2]

Make sure the 90's are also CPVC

[Marc-Andre Beauchemin]

James,

CPVC is all good here in Quebec-Canada

[William Warner]

While I don't like to see it... it is approved in many jurisdictions. Know your area...

That being said, there is a CPVC line specifically designed for TPR drains which is blue-green in color; however, standard CPVC is typically allowed again depending on the codes in your area(s)