I have a PVC pipe that I need to attach to the metal threads found on the Delta rough (shower unit). Not sure how I go about attaching. I read on 2 sites that you cannot attach a PVC pipe female end to a metal threaded male end. Unable to find any info on how to tackle this problem. Thank you for your help.

Use a threaded female adapter. Screw adapter onto male threads then glue pipe.

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I read on 2 sites that you cannot attach a PVC pipe female end to a metal threaded male end

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Can you provide links to that misinformation.

With very hot water, PVC expands a bit more than other materials and can lose thread contact. With cold water no issue. Is all the hot water plumbed with PVC?

Sorry should have said use a CPVC adapter. Of course all hot water piping should be CPVC

I agree with Harold. CPVC should handle the job just fine. Good luck, Tom

Hello Harold,

The link below is for you, Thanks.

John

Connecting PVC Pipe to Metal Pipe

Never Male Metal Thread into Plastic Female fitting.

In your case, I would install 1/2 MIP brass coupling on the body of the faucet first, then screwed in 1/2" Male CPVC fitting.

Or, if you want it to be removable, install 1/2" brass unions, one on each connection.

Good luck with your project !

Milo

I have repaired hundreds of leaking pipe connections that resulted from a cracked, plastic female adapter.. The link that Afaroo provided has accurate, and correct information explaining why plastic female adapters are not an ideal connector. When circumstances require the use of a plastic female adapter, I always tighten a stainless steel clamp on the adapter before assembly...

Great advice about female threaded plastic couplings guys. Thanks for your imput Tom