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Thread: can vent face upwards on a backflow preventer

  1. #1

    Default can vent face upwards on a backflow preventer

    My boiler has a Watts Series 9D Backflow Preventer 3/4" installed and the vent is facing upwards.

    Do you think its a problem or should i try turning it so it points downward. It may not be easy to turn downward. Thanks.

  2. #2
    Moderator & Master Plumber hj's Avatar
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    Default vent

    It shouldn't because then any discharged water stays in the body. There are steel springs in it which will deteriorate if immersed in water. This is the same reason the discharge from a T&P valve cannot run uphill.

  3. #3
    Plumber patrick88's Avatar
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    Default

    Quote Originally Posted by trafficscout
    My boiler has a Watts Series 9D Backflow Preventer 3/4" installed and the vent is facing upwards.

    Do you think its a problem or should i try turning it so it points downward. It may not be easy to turn downward. Thanks.
    It should have union style ends on it so turning it should not be a big problem.
    I'm just starting to work with an old friend of mine to bring solar electric and hot water systems, wind turbines, Flex Fuel Boilers, batteries, hydroponic gardening, books, pellet grills and more. Also the parts for DIY installation.

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