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OT: Mainline Brand Backwater Valves

D107 Member Posts: 1,852
Saw this on the Holmes on Homes show. Any experience with this or comments on how it's open design differs from standard, closed valves?

Canadian Site:

<a href="http://www.backwatervalve.com/index.html">http://www.backwatervalve.com/index.html</a>

<a href="http://www.backwatervalve.com/fullport/protect/disadvantage.html">http://www.backwatervalve.com/fullport/protect/disadvantage.html</a>

US site:

<a href="http://www.backwater-valves.com/">http://www.backwater-valves.com/</a>


  • rich pickering
    rich pickering Member Posts: 277
    We use them

    on every new installation.  Our codes require every fixture below grade to be protected by some sort of backflow device.

    Whenever a customer has a sewer backup, our insurance companies require one to be installed or they will deny any future coverage.

    Their advantage is that being open, the building sewer and the utility sewer still uses the buildings venting. 
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