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

    Aug 14, 2012, 10:08 AM
    I have two Toto commodes backed up to each other (common wall between two bathrooms)
    When one commode is flushed, it drains the available water for flushing in the other commode, which, in turn, reduces the water available to flush in that commode. Any solution?
    speedball1's Avatar
    speedball1 Posts: 29,301, Reputation: 1939
    Eternal Plumber
    		  
    #2

    Aug 14, 2012, 10:26 AM
    Pure and simple! You have a blocked vent that must be snaked. Vents are there to prevent such things from happening, Vents relieve the suction caused by drain and flushing fixtures. When a vent's blocked the suction has to relieve itself somewhere, Some time a fixtures trap. In your case the suction pull the water out of your bowl.
    The solution would be to snake the vents on both bathrooms. Good luck, Tom
    Milo Dolezal's Avatar
    Milo Dolezal Posts: 7,192, Reputation: 523
    Plumbing Expert
    		  
    #3

    Aug 14, 2012, 04:28 PM
    If you have two toilets installed back-to-back than it should have only 1 (one) - 2" diameter common vent. Do as Tom suggested. Milo
    speedball1's Avatar
    speedball1 Posts: 29,301, Reputation: 1939
    Eternal Plumber
    		  
    #4

    Aug 15, 2012, 09:03 AM
    Not if both toilets are wet vented by the vanity vents Milo, You're thinking UPC again. Cheers, Tom
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