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Thread: Too many angles in the plumbing? Is there flexible piping?

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    Too many angles in the plumbing? Is there flexible piping?

    I even brought pictures! And if you read all the way down there is probably a funny story.

    So I have replaced my cartridge filter with a sand filter. However, because the inlet and outlets are in different locations, it required me to redo the plumbing. There are a few drips with the new pipes in places (can those be caulked?) but the water coming out of the filter in the pipes, the pipe vibrates, so I don't know if there is too much pressure with the way I have it now, or if it's because it's somewhat "floating", if that makes sense by the pictures.

    I am apparently over my attachment quota but the link to the original plumbing is here and the new plumbing is here

    In hindsight maybe I should have used more gently rounding curves to connect the filter to the heater, but I was working with the existing plumbing and joints that I already had. My mind works in right angles not curves! If this fails, is there a flexible tube/pipe I can use instead of rigid pvc?

    Also, there is a small but steady trickle of water coming from the backwash port when the pump is running. This just means new spider gasket, right?

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    Ok so story time if you care. The section between the filter and the union between the filter and the pump. When I had cut all of the pieces, I put them together to make sure they were all the right size and fit correctly before I cemented them. That particular section, primer had spilled on the pipe and the fitting into the filter, so I could not pull it apart to actually cement it. When I turned on the pump, it worked for about 3 seconds, saw water returning into the pool, and then that section of pipe came apart, in a glorious Mt. Vesuvius fashion, completely drenching me. It was also drenching the pump cut off outlet, and I was very nervous about reaching under the cover to shut it off, but what could I do? (spoiler: I wasn't electrocuted.) Once it dries I primer and cement that section, let it cure. The next day I go back out (bringing a shield with me in case I need to block the water to access the pump shut off.) and I turn the pump on again. Once again water erupts, but this time from the part of the pipe that goes into the union! Apparently I didn't cement either end! So I dried it off, cemented it, tried it again, all working! Hooray!
    IG gunite freeform pool with attached spa, stone surround, 18,000 gallons, Pentair Tagelus TA60, Pentair Whisperflo WF-8 pump.

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    mas985's Avatar
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    Re: Too many angles in the plumbing? Is there flexible piping?

    There is flexible pipe but it isn't as smooth as ridged pipes so it has more head loss per foot. I don't think it would buy you anything.

    As for the vibration, you have a huge pump so the water velocity in the pipes is probably very high and causing the vibration. I know you need that pump size for the spa but for normal circulation, you might consider a two speed motor running on low.
    Mark
    Hydraulics 101; Pump Ed 101; Pump/Pool Spreadsheets; Pump Run Time Study; DIY Acid Dosing; DIY Cover Roller
    18'x36' 20k plaster, MaxFlo SP2303VSP, Aqualogic PS8 SWCG, 420 sq-ft Cartridge, Solar, 6 jet spa, 1 HP jet pump, 400k BTU NG Heater

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    Re: Too many angles in the plumbing? Is there flexible piping?

    Is the vibration bad? It's not huge or noisy, I'm just trying to be hyper aware of everything. I hate to put in another motor because this motor is pretty much new!
    IG gunite freeform pool with attached spa, stone surround, 18,000 gallons, Pentair Tagelus TA60, Pentair Whisperflo WF-8 pump.

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    mas985's Avatar
    Join Date
    May 2007
    Location
    Pleasanton, CA
    Posts
    11,487

    Re: Too many angles in the plumbing? Is there flexible piping?

    Not unless it is causing a problem (e.g. loosing joints).
    Mark
    Hydraulics 101; Pump Ed 101; Pump/Pool Spreadsheets; Pump Run Time Study; DIY Acid Dosing; DIY Cover Roller
    18'x36' 20k plaster, MaxFlo SP2303VSP, Aqualogic PS8 SWCG, 420 sq-ft Cartridge, Solar, 6 jet spa, 1 HP jet pump, 400k BTU NG Heater

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