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Thread: Noisy Multiport Valve - Please HELP :)

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    Noisy Multiport Valve - Please HELP :)


    I recently replaced my Sta-rite DE filter with a new Hayward 210t sand filter with a multiport valve for my roughly 10k gallon in ground pool. The new filter works great...with the exception of the noise it makes . The noise seems to be coming from the multiport valve. To give you an idea of the setup, I have a 1 1/2 HP Challenger pump with a 2" output valve. All the other pipes are also 2" coming from and going to the pool. Since the multiport valve has 1 1/2" in's and out's, I had step down the size of the pipe going in and step up the size of the pipe going out.

    I'm not really sure how to describe the sound...its like a constant "currrr" (I realize that doesn't really help). Any ideas on whats causing it and how to fix it? I've opened up the valve, nothing seems to be rattling around inside. I've back-washed and rinsed numerous times (I should note the noise is not present when in rinse position) with no success. Is it simply and issue of too much pressure from the pump to the valve? Would putting some sort of gate valve between the pump and the valve to slow the flow be helpful or harmful? Any ideas or suggestions would be greatly appreciated.

    I also have pictures of the setup if needed. Please let me know if you need any other info to help solve this mystery.



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    Mod Squad Bama Rambler's Avatar
    Join Date
    Jun 2009
    SouthWest Alabama

    Re: Noisy Multiport Valve - Please HELP :)

    There was a thread a while back about a multiport making a noise. There was a fix posted, but I can't remember what it was now. You can use the Google search in the lower left of each page to search for it. If you don't have any luck post back and someone will help look for it.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/¼hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
    Pool School ----- Pool Math ----- TF-Test Kit

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    Mod Squad JohnT's Avatar
    Join Date
    Apr 2007
    SW Indiana

    Re: Noisy Multiport Valve - Please HELP :)

    I'd be inclined to guess your filter is too small for your pump. Is there air in your pump strainer basket?
    TFP Moderator
    20K Gallon 20X36 Vinyl Inground
    Hayward S244T Sand Filter with 1HP Whisperflo Pump. Liquidator C-201 and Solar Heat

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    Re: Noisy Multiport Valve - Please HELP :)

    No. No air bubbles in the strainer basket. I still think you're dead on, I just want to be sure I'm not missing something before I make a change.

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