We are trying to install a water system in our home and need to know how we go from copper pipe to pvc pipe.

Try these.

Or this!

Tom's sweat fitting is much cheaper. A 3/4 Shark-Bite will not fit a 3/4'' PVC pipe. 1/2'' PVC is much closer, but I can't say if it would work. You could compromise and use a Shark-Bite to thread adapter. You also can go Shark-Bite to CPVC to a CPVC/PVC adapter. Use a cement meant to work with either.

I have used CPVC compression unions. With them, it is best to anchor the pipes solid.

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Originally Posted by speedball1

Or this!

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Other way around, Tom.

When joining threaded plastic to threaded metallic fittings the plastic fitting should always be the male fitting -- Otherwise the plastic female fitting will crack during normal expansion and contraction.

Section 606.2.2 of the UPC.

Quote:

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Originally Posted by labman

I have used CPVC compression unions. With them, it is best to anchor the pipes solid.

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Compression unions are fine, but only in accessible locations.

Burying them inside walls is strictly forbidden.

Quote:

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Originally Posted by iamgrowler

Other way around, Tom.

When joining threaded plastic to threaded metallic fittings the plastic fitting should always be the male fitting -- Otherwise the plastic female fitting will crack during normal expansion and contraction.

Section 606.2.2 of the UPC.

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OK! Turn the thingy around then.

Quote:

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Originally Posted by speedball1

OK! Turn the thingy around then.

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:D