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Thread: Trying to determine head loss for Hayward sand filter

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    wpbucher's Avatar
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    Trying to determine head loss for Hayward sand filter

    Trying to determine head loss for Hayward S310S sand filter with SP0715X62 multi-port valve.

    The Hayward site lists a design flow rate of 98 GPM, but nothing about head loss or pressure loss.

    Any help is most appreciated.
    2013 HotSpring Grandee with Ace Sanitizing System
    25K IG vinyl pool with Alps spillover spa and waterfall. Build Date: June 2013
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    Intellibrite 5G (2 pool and 1 in spa) lights :: TFT-100 test kit, Taylor K-1776 test kit

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    Mod Squad jblizzle's Avatar
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    Re: Trying to determine head loss for Hayward sand filter

    You can find some info here:
    hydraulics-101-have-you-lost-your-head-t915.html#p6543

    There is a chart for head loss, although your combo is not on it ... might offer some idea if you can find the Pentair equivalent.
    Jason, TFP Moderator
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    mas985's Avatar
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    Re: Trying to determine head loss for Hayward sand filter

    Not all filter lines have head loss data but the two most important head loss factors for a sand filter are the size in sq-ft and the backwash valve size. So just use the equivalent Pentair filter and it should be relatively close.
    Mark
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    Re: Trying to determine head loss for Hayward sand filter

    Hayward probably has the curves for the valve and the filter. They might send you a copy for each if you requested them.

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    wpbucher's Avatar
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    Re: Trying to determine head loss for Hayward sand filter

    Ok....I think the filter and multi-port match to the TR 100 with 2" multiport......or 21 ft head loss @ 90 gpm.

    Thanks TFP!!!
    2013 HotSpring Grandee with Ace Sanitizing System
    25K IG vinyl pool with Alps spillover spa and waterfall. Build Date: June 2013
    Triton II TR100 Sand Filter, Pentair Master Temp 400 natural gas pool heater, Intellichlor SWG, Rainbow Chlorine Feeder
    Pentair VF filter pump, WhisperFlo 2 hp WFE-8 waterfall pump, WhisperFloFX 2 hp spillover spa pump
    Intellibrite 5G (2 pool and 1 in spa) lights :: TFT-100 test kit, Taylor K-1776 test kit

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