Transition CPVC to copper

Eric_ht · Oct 4, 2008

What is the best way to transition CPVC to copper? I have a couple of transitions in the addition on my house that are a threaded female CPVC and a threaded female sweat on the copper side with a brass nipple in between.

But I read the other day that threaded female CPVC fittings are not recommended and even against code in some areas due to their ability to fail.

I've also been told that it's best to have a piece of brass in between the two types of materials.

How would the pros do it?

Thanks

99k · Oct 4, 2008

Eric_ht said:
What is the best way to transition cpvc to copper? I have a couple of transitions in the addition on my house that are a threaded female cpvc and a threaded female sweat on the copper side with a brass nipple in between.

But I read the other day that threaded female cpvc fittings are not recommended and even against code in some areas due to their ability to fail.

I've also been told that it's best to have a piece of brass in between the two types of materials.

How would the pros do it?

Thanks

The newer CPVC fittings have a female brass thread that is insert molded into the adaptor. Do not use an adaptor that is only CPVC ... high likelihood of failing in the future. If the joint is not inside wall, I would cutoff the CPVC adaptor and use a sharkbite that can convert from pipe to a male thread.

Sponsor · 2022-01-29T12:20:58-0800

Redwood · Oct 4, 2008

I would use transition fittings like these below or, Sharkbites.

hj · Oct 5, 2008

transition

A plastic female thread, of any material, will be stressed when a metal item is screwed into it, which could cause eventual failure. The brass transition only applies to dissimilar metals not plastic.

Eric_ht · Oct 5, 2008

Thanks guys. I've seen the fittings pictured above at the box stores and wasn't sure if they were the best fittings to use or not. now I know.

thanks again

GPRACING · Nov 25, 2008

The sharkbites are the way to go!They are NOT made in china and they are certified to go in walls and in the ground.Ive never been wild about putting a threaded plastic fitting into a metal fitting.Thay seem to always eventually leak or break off at the threads.just my 02 cents...

Transition CPVC to copper

Eric_ht

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99k

Radon Contractor and Water Treatment

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Redwood

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hj

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Eric_ht

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GPRACING

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