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Thread: Holder/Bracket for PMUP

  1. #1
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    Holder/Bracket for PMUP

    I have a PMUP in my ATO reservoir with a optical sensor near the bottom so my Apex will shut off the ATO and alert me when the water level drops. The problem is the PMUP tubing has some bends in it so it doesn’t like to stay standing and will frequently tip over, meaning it starts sucking air before the water level drops below the sensor. I’ve tried removing the bend in the tubing, but it has too much of a memory and keeps re-bending.

    Does anyone have any ideas for a bracket to keep it standing upright?

  2. #2
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    Try heating up the tubing with a hair dryer and bending it straight. That will basically "reset" the memory of the tubing and then you don't need a bracket at all.

    You might be an engineer if...You have no life and can prove it mathematically.

  3. #3
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    I tried soaking it in hot water - it helped, but there was still some memory in the tubing that gradually returned. I’ll try it again to see if it helps

  4. #4
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    The PMUP outlet will accept a standard ⅜" push style fitting.
    So with that in mind, you will need:
    A. (1) ⅜" to ⅜" push fitting
    B. (1) ⅜" to ¼" push fitting
    C. (1) length of ⅜" ridge tubing

    1. Attach "A" to the PMUP
    2. Attach "C" to "A"
    3. Place PMUP with tube attached into the container to get a length measurement.
    4. Cut "C" to the proper length.
    5. Attach "B" to "C".
    6. Attach you ATO feed line to "B".


    This will hold you PMUP upright!

  5. #5
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    Thanks for the suggestions. I tried heating the tubing, but it eventually remembered its bend and the pump started tipping over again. A user on Reef2reef posted a link to a holder he had seen and ended up making one similar. The bottom strainer of the pump unscrews and has a flange on it, so I made a simple acrylic stand, put the pump through it and screwed the strainer on from the bottom to hold the pump on the stand.

    I'm going to see how it works like this. If I need to, I'll drill some holes and add some suction cups to hold it in place.


    IMG_2180.JPG

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