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Discussion Starter · #1 ·
I will be making 1/2" PEX to 1/2" CPVC using copper crimp rings. Any recomendations on how these connections should be made? I'm looking at using a male pex to a brass female (with rubber washer) that has cpvc attached for gluing.


Is there a better connection?
 

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why not just use a 1/2" sharkbite ? have yet to see one fail
bob


I will be making 1/2" PEX to 1/2" CPVC using copper crimp rings. Any recomendations on how these connections should be made? I'm looking at using a male pex to a brass female (with rubber washer) that has cpvc attached for gluing.


Is there a better connection?
 

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I'm a plumber, but I've never used CPVC except to make a minor repair once on an existing system. I'm just curious - why the rubber washer? I know the PEX x male adaptor has a tapered thread (pipe thread), and I would assume the CPVC x female adaptor does also(?) If so, there's no need for the rubber washer - just some teflon tape or pipe dope. Does the washer come with the CPVC fitting, or were you planning to add it?

Edited to add: I just googled it, and saw that the washer is integral to that fitting, so you shouldn't use it with that PEX adaptor. I'd use a CPVC x male adaptor (all plastic):

http://www.pvcfittingsdirect.com/_e...apter_Mipt_x_Slip_PVC_Fitting_Schedule_40.htm,

and a 1/2" PEX x female adaptor (brass):

http://www.pexsupply.com/Wirsbo-Upo...ass-Female-Threaded-Adapter-1-2-PEX-x-1-2-NPT
 

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Sorry to say, I feel in a diy situation a sharkbite is going to be the way to go. Plastic to brass leaks all to often if not done properly, which can be tricky.
 

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And they tend to crack down the seam on the sides of the fitting.
 

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Why not buy a cpvc x pex adapter. They do make them

Sent from my iPhone using DIY Forum
 

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Discussion Starter · #10 ·
Are those sharkbite fittings really reliable? And if not for cost would you use them instead of copper crimps on pex?
 
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