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    urkgask's Avatar
    urkgask Posts: 2, Reputation: 1
    New Member
    		  
    #1

    Mar 24, 2009, 09:42 AM
    PVC Plumbing on Hot Water Supply
    I didn't know there was a restriction on hot water running through PCV plumbing. I had to run some pipe and replaced the old copper with PVC (not cpvc), including the hot supply. Now, I understand that up to 140 degree's PVC is OK. I did a temp check and my hot water is 130 degrees. What kind of problems would I run into if the temp was 150 degree? Is it a health issue or will there be a failure in the supply lines? Should I strongly consider
    Replacing the PVC supplying the hot water or am I OK? As you can tell I am not a plumber and working with plastic pipe is easy for me. Thank You!
    massplumber2008's Avatar
    massplumber2008 Posts: 12,832, Reputation: 1212
    Senior Plumbing Expert
    		  
    #2

    Mar 24, 2009, 10:29 AM
    Hi Urk...

    You need to replace the hot water pipes... no doubt! Past 140F (and even between 120-130F) and the pipes can simply fail. By fail I mean the pipes will simply come apart and will flood the place at full pressure.

    In terms of connecting to any applicance, such as a water heater, you MUST run copper pipe and fittings or brass pipe and fittings to about 18" off the heater... then you can transition over to PVC for cold water and CPVC for the hot water. Never connect directly from the appliance to PVC or CPVC.

    Let us know if you want to discuss more...

    MARK
    urkgask's Avatar
    urkgask Posts: 2, Reputation: 1
    New Member
    		  
    #3

    Mar 24, 2009, 11:20 AM
    Thank You, Massplumber2008! It sounds like you saved me from a potential disaster.
    Milo Dolezal's Avatar
    Milo Dolezal Posts: 7,192, Reputation: 523
    Plumbing Expert
    		  
    #4

    Mar 24, 2009, 11:50 AM

    Well explained, Mark..
    massplumber2008's Avatar
    massplumber2008 Posts: 12,832, Reputation: 1212
    Senior Plumbing Expert
    		  
    #5

    Mar 24, 2009, 04:25 PM
    Hi Guys...

    Thanks for positive words! Why we are here... :)
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