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Check valve position

hrlevyhrlevy Member Posts: 18
I am installing a laundry tub pump for washing machine to drain into. I was wondering if the check valve can be installed horizontally or does it need to put vertically. All the instructions say is to install near to pump.

thank you.


  • jonny88jonny88 Member Posts: 1,139
    check valve

    on a 45 degree is best
  • Jamie HallJamie Hall Member Posts: 6,660
    but if you can't do that

    a regular swing check should -- in my view -- always be installed so that the flow through it is horizontal or upwards -- never downwards.

    Building superintendent/caretaker, 7200 sq. ft. historic house museum with dependencies in New England.

    Hoffman Equipped System (all original except boiler), Weil-McClain 580, 2.75 gph Carlin, Vapourstat 0.5 -- 6.0 ounces per square inch
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