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  • Results 1 to 7 of 7

    Thread: Does a submersible pump need to be watertight?

    1. #1
      beanbone's Avatar
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      Does a submersible pump need to be watertight?

      Hi all

      Iím working with a submersible pump and the outlet pipe Iíve rigged underwater to convert to PVC. The challenge its is not completely watertight underwater. Will this cause major pump under performance? The pump still pushes water effectively but Iím curious about the physics of this.


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    2. #2
      OCkoiFan's Avatar
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      if you’re think the connection is not seal tight then some water might be move around down there
      Can you feel anything with your hand? Or if it is too deep time to go external
      M.Nguyen


    3. #3
      kimini is offline Senior Member
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      There will be no problem with the pump's performance. All it sees is slightly less back pressure. What *you* will see is less flow than if the outlet connection was properly sealed, and possibly a slightly lower electric bill.

    4. #4
      beanbone's Avatar
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      Thatís what I noticed. Slightly less flow, but not dramatic. External pump is not an option. This is a small quarantine.


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    5. #5
      icu2's Avatar
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      I'm with everyone else... I don't have sub pumps but I almost never glue plumbing inside of
      home made filters either. If they aren't under pressure or are short runs there's no harm and sometimes
      they leak a little but it always enables me to adjust them if necessary and I've not had any leak
      bad enough that I ever noticed it.
      --Steve
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      Who knows what the tide could bring." --Tom Hanks in Cast Away

    6. #6
      OCkoiFan's Avatar
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      The best submersible pump I use is a Periha and i use pvc all the way and did not loose or skip a beat
      You just have to use the correct connections/connectors rather just flex hoses and adapters
      Sorry the pump is below that 1.5Ē pipe
      Attached Images Attached Images  
      Last edited by OCkoiFan; 01-06-2019 at 11:01 PM.
      M.Nguyen


    7. #7
      rcmike is offline Supporting Member
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      Quote Originally Posted by kimini View Post
      There will be no problem with the pump's performance. All it sees is slightly less back pressure. What *you* will see is less flow than if the outlet connection was properly sealed, and possibly a slightly lower electric bill.
      Actually if your pump had less back pressure the electric bill would be higher if anything. More head = less amps. I seriously doubt there would be a noticeable difference though unless it was a very big leak.



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