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    howtodo's Avatar
    howtodo Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Jul 14, 2007, 12:22 PM
    Expansion tank
    If I install a water pressure reducing valve on my main line for my hot water heater,do I need to install an expansion tank for my hot water heater?
    speedball1's Avatar
    speedball1 Posts: 29,301, Reputation: 1939
    Eternal Plumber
    		  
    #2

    Jul 14, 2007, 12:25 PM
    No, not unless you have a sprinkler system backflow preventer or check valve installed in your service line.
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