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    nthebrk's Avatar
    nthebrk Posts: 9, Reputation: 1
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    #1

    Dec 9, 2010, 04:47 PM
    Can I replace galvanized pipe in attic with PVC
    I have a leak at an galvanized elbow, luckily, there is a union righ above it. Do I have to use galvanized or can I use threaded PVC?
    massplumber2008's Avatar
    massplumber2008 Posts: 12,832, Reputation: 1212
    Senior Plumbing Expert
    		  
    #2

    Dec 9, 2010, 05:01 PM

    Hi Nthebrk...

    You certainly can use threaded PVC fittings and pipe or you could even use SHIELDED CLAMPS to transition from PVC to galvanized pipes... both are fine here.

    Mark
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    nthebrk's Avatar
    nthebrk Posts: 9, Reputation: 1
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    #3

    Dec 9, 2010, 05:11 PM
    How do you use the shielded clamps connecting galvanzied and PVC? Pictures or video on utube?

    Do you use those just like a coupling? Where can you purchased them? A Big Box store or locl plumbing? Thanks for your help.
    massplumber2008's Avatar
    massplumber2008 Posts: 12,832, Reputation: 1212
    Senior Plumbing Expert
    		  
    #4

    Dec 9, 2010, 05:56 PM

    Hi Nthebrk...

    I'm sorry... thought this was a galvanized VENT pipe in the attic dripping water... ;)

    If this is a water pipe then you can still convert from HOT/COLD PVC to galvanized piping using the threaded PVC adapters as you thought. Just be sure that the PVC pipe is approved for hot water use.

    No SHIELDED CLAMPS here, OK?

    Mark
    mygirlsdad77's Avatar
    mygirlsdad77 Posts: 5,713, Reputation: 339
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    #5

    Dec 9, 2010, 08:29 PM

    If this is indeed water, I would suggest cpvc instead of pvc.
    ballengerb1's Avatar
    ballengerb1 Posts: 27,378, Reputation: 2280
    Home Repair & Remodeling Expert
    		  
    #6

    Dec 9, 2010, 09:04 PM

    Please tell us what purpose this pipe serves, is it a supply line or what and is the attic never going to freeze?
    massplumber2008's Avatar
    massplumber2008 Posts: 12,832, Reputation: 1212
    Senior Plumbing Expert
    		  
    #7

    Dec 10, 2010, 05:47 AM

    Hi guys...

    Lee, have you heard of the PVC that is now made to work with hot water? I've heard of it, but have yet to use it.

    I'm older school myself so agree that CPVC is the normal choice for water, but I guess others have started using the new PVC water piping now that it is manufactured for hot water, too.

    Anyway, just wanted to pop in and mention that approved PVC and CPVC are both fine in this case IF this is water piping.

    Mark

    PS... nice to see you... been awhile :)
    mygirlsdad77's Avatar
    mygirlsdad77 Posts: 5,713, Reputation: 339
    Plumbing Expert
    		  
    #8

    Dec 10, 2010, 04:16 PM

    Hi guys. Just been busy, not much time for the old computer, plus when do come in, seems you guys have it handled.

    Mark, I hadn't heard of the new pvc, good to know. Although, we pretty much just convert old galv water lines to copper or pex. I guess I just think of cpvc for size, as you can use sharkbites or compression fitting on it in ememgencies.
    nthebrk's Avatar
    nthebrk Posts: 9, Reputation: 1
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    #9

    Dec 23, 2010, 05:44 PM
    Thanks everyone, got it fixed. It was cold water side... just changed back to galvanized. If more pin hole leaks, might try CPVC.
    massplumber2008's Avatar
    massplumber2008 Posts: 12,832, Reputation: 1212
    Senior Plumbing Expert
    		  
    #10

    Dec 23, 2010, 08:26 PM

    Thank you for updating us! I agree with Lee that the CPVC is better choice than PVC, even if the new PVC is approved for hot water use... ;)

    As plumbers with all the tools needed we usually opt. for copper or PEX piping, but CPVC is a real user-friendly system that is very reliable as well.

    Thanks again!

    Mark
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