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Thread: CPVC for Dummies....

  1. #1
    DIY Junior Member gtpvette's Avatar
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    Default CPVC for Dummies....

    OK,, I知 the dummy. I知 replacing all of the Polybutelene water supply pipes in my weekend mobile home with CPVC. The plan is to do it in stages,, with the water heater and the kitchen being the first to get done. So a couple of questions to make sure I知 heading down the right path.

    I知 installing a new water heater. The current thought is to use a transition piece to plumb the water heater. What I mean is one half of the piece is a metal male fitting that would screw into the water heater (hot and cold sides) the other half is a female セ CPVC glue fitting. Is this a good way to do this?

    Like this.




    In looking at the faucet valves at Lowes yesterday the only one they had was what looked to be a glue fitting. The best way???

    Like this.



    Lastley I need to tie back into the new CPVC hot and cold lines 4 of the old flex pipes that supply both of the baths. I didn稚 see anything at Lowes,,, so would some type of SharkBite transition be the right solution?

    Many Thanks!!
    Fred

  2. #2
    Plumber jimbo's Avatar
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    If the water heater is gas, you can't go right to it with plastic. You need 18" of copper, which could be a flex copper connector.

  3. #3
    DIY Junior Member gtpvette's Avatar
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    The heater is electric,, but could still do the copper flex pipe if required.

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    Moderator & Master Plumber hj's Avatar
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    Do not connect CPVC directly to any water heater. Use a section of copper first.
    Licensed residential and commercial plumber

  5. #5
    DIY Junior Member gtpvette's Avatar
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    Installed the water heater and spliced in the old lines with the shark bites. All is great except the drip where I tied the PVC and the CPVC together for the cold water supply. I used this:



    and tied it to a threaded female PVC connection. This is where it drips. I was afraid to over tighten as I didn't want to crack the female PVC connector. It seemed tight. I did use teflon tape. Was that wrong? Ideas?

    Thanks!

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    Never screw plastic over metal. PVC water pipe should never be used inside a house.

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    DIY Junior Member gtpvette's Avatar
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    Quote Originally Posted by Hackney plumbing View Post
    Never screw plastic over metal. PVC water pipe should never be used inside a house.
    Thank you sir. What would be the correct to tie PVC water supply to CPVC house pipes?

  8. #8
    In the Trades Tom Sawyer's Avatar
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    male and female adapters
    [B]No, plumbing ain't rocket science. Unlike rocket science, plumbing requires a license[B]

  9. #9
    DIY Junior Member gtpvette's Avatar
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    Quote Originally Posted by Hackney plumbing View Post
    Never screw plastic over metal. PVC water pipe should never be used inside a house.
    OK,, picked up the metal/CPVC female side and the male PVC side. Install scheduled for Sat.

    Thanks!

  10. #10
    Moderator & Master Plumber hj's Avatar
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    Where did the PVC come from. You said you were replacing polybutylene.
    Licensed residential and commercial plumber

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