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

    Nov 11, 2013, 04:48 AM
    expansion tank overflow
    Yesterday our expansion tank overflowed. We discovered that the overflow was blocked by scale, which we cleared quickly, and the ballcock valve was leaking. It is a diaphragm ballcock and I assume that the seal has worn. Today I have tried to unscrew the knurled nut, with no success, it is in a small tank which is difficult to get to. Tried using a Stilson, but the whole unit turned. I am very wary of taking apart at the pipe, for fear of more water coming out.
    HELP!
    speedball1's Avatar
    speedball1 Posts: 29,301, Reputation: 1939
    Eternal Plumber
    		  
    #2

    Nov 11, 2013, 10:19 AM
    Cen can you give me a picture? Where is the overflow located on your tank? This is a typical installation. Does yours look like this? Back to you, Tom
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    hkstroud's Avatar
    hkstroud Posts: 11,929, Reputation: 899
    Home Improvement & Construction Expert
    		  
    #3

    Nov 11, 2013, 11:09 AM
    Are you in the USA?
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