Klunkless Check Valve for sump pump

Discussion in 'Plumbing Products' started by Royalwapiti, Nov 1, 2018.

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  1. Nov 8, 2018 #21

    Diehard

    Diehard

    Diehard

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    Of course a weep hole would not be required if conditions never allowed the sump water level to go so low as to allow air to enter the pumps volute area. Although I would think upon startup there could be a slim chance it could get enough air in there to require more water be added in the sump to force itself into the pump.

    EDIT: There is at least one manufacture of sump pumps that doesn't require a weep hole, as it designed so the water enters the impeller from the top.
     
  2. Nov 12, 2018 at 5:53 PM #22

    SHEPLMBR

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    This is from Zoeller

    3. Vent hole. It is necessary that all submersible sump, effluent, and sewage pumps
    capable of handling various sizes of solid waste be of the bottom intake design to
    reduce clogging and seal failures. If a check valve is incorporated in the installation, a
    3/16" (5 mm)vent hole must be drilled in the discharge pipe below the check valve and
    pit cover to purge the unit of trapped air. Vent hole should be checked periodically for
    clogging. The vent hole on a High Head application may cause too much turbulence.
    If you choose not to drill a vent hole, be sure the pump case and impeller is covered
    with liquid before connecting the pipe to the check valve. NOTE: THE HOLE MUST
    BE BELOW THE BASIN COVER AND CLEANED PERIODICALLY. Water stream will
    be visible when pump is operating.
     
  3. Nov 12, 2018 at 6:13 PM #23

    Jamesplumbing06

    Jamesplumbing06

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    So this application being the turbulence. Might plug that hole. ? Sounds elective if your careful to have float set to shut off above impellers so water stays that high? Am I reading it correct ?
     
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  4. Nov 12, 2018 at 6:27 PM #24

    SHEPLMBR

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    I think it depends on the application. Sump pumps usually aren't high head pumps. Those are usually for septic effluent systems. When drain field is way up a hill.
     
  5. Nov 12, 2018 at 6:50 PM #25

    Jamesplumbing06

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  6. Nov 13, 2018 at 2:54 AM #26

    Diehard

    Diehard

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    That's correct! so long as the water level in the sump is never lower than the top of the pumps volute, air should not get in there. That's the same reasoning as the Zoeller quote above that says, "
    If you choose not to drill a vent hole, be sure the pump case and impeller is covered
    with liquid before connecting the pipe to the check valve."
    High head pumps don't enter into it, so long as they follow the same rules. (NO AIR SHOULD BE ALLOWED TO GET TRAPPED IN THE IMPELLER VOLUTE AREA.)
    You could plug the hole with a manual vent cock just in case. That would allow someone to bleed out the air if it ever happened to find its way in there.
     
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  7. Nov 13, 2018 at 12:32 PM #27

    Jamesplumbing06

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  8. Nov 13, 2018 at 2:38 PM #28

    SHEPLMBR

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    This is true. However, some choose to put pumps on bricks or small stands in the pit to keep debris from clogging them. It's a case by case situation.
     
  9. Nov 13, 2018 at 2:56 PM #29

    Diehard

    Diehard

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    As in "case" they don't know what they're doing.:D
    Well you can't go wrong with a small weep hole but I would think locating it below the min. water level would be preferred.
     
  10. Nov 13, 2018 at 6:56 PM #30

    SHEPLMBR

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    I sell the Liberty Pump "brick" all day long. These guys out here swear by them.
     
  11. Nov 13, 2018 at 11:21 PM #31

    Diehard

    Diehard

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    Just looked at their Series 230 sump pump. Looks like they may have a built in weep hole. ???
     

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  12. Nov 14, 2018 at 12:21 PM #32

    Jamesplumbing06

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    Most sump water levels are created by the float. The float is mounted to pump. So put the pump on ceiling. Until float switch floats nothing working. Bricks or bottom Pump is in water.
     
  13. Nov 15, 2018 at 1:57 PM #33

    Diehard

    Diehard

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    Just got this back from Liberty Pumps...
    Liberty Pumps.jpg
     

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