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Thread: Pipe Sizing and Return Question

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    Pipe Sizing and Return Question

    My PB usually runs all 1.5" lines. I requested 2" on mine and he said he will do it but that I will not gain anything because the eyeball returns in the pool will still be only 3/4" and thus will negate using any 2".

    I am having him put in Whisperflo WFDS 2 speed pump and Quad DE 60 filter. Therefore everything is going to be 2" except the returns I guess.

    Is he right?
    18 x 36 IG Vinyl Liner 28K Gallons
    Pentair Intelliflo VS+SVRS, Pentair CC + 420 Cartridge Filter, Easytouch CP with IC40 SWG
    2" Suction and Return Lines - 2 skimmers, 6 returns
    Dolphin Diagnostic Advantage Robot

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    Re: Pipe Sizing and Return Question

    Is he right?
    No. Especially on the suction side, 2" lines are very desirable. Obviously, larger pipe reduces resistance (head) and the less resistance you have, the more effective the system.

    It's not a huge deal but your system will simply be a little better if you opt for 2" plumbing.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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    JasonLion's Avatar
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    Re: Pipe Sizing and Return Question

    What duraleigh said.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
    Creator of PoolMath and Pool Calculator. Other handy links: Support this site, TF Test Kits, Pool School

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    mas985's Avatar
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    Re: Pipe Sizing and Return Question

    Tell him you want 1" eyeballs AND 2" pipe. Also, make sure he runs separate suction lines for each skimmer and/or main drain pair.
    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: Pipe Sizing and Return Question

    Quote Originally Posted by briansturgeon

    I am having him put in Whisperflo WFDS 2 speed pump and Quad DE 60 filter. Ta

    Is he right?
    What size WDFS?

    And no he's not right. The only time builder should be running 1 1/2" on a pool these days are for water features.
    20X40 30,000 gallon gunite pool

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    JasonLion's Avatar
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    Re: Pipe Sizing and Return Question

    Quote Originally Posted by racket
    Quote Originally Posted by briansturgeon
    The only time builder should be running 1 1/2" on a pool these days are for water features.
    Or if you have four+ returns all run separately to the equipment pad and the pool isn't huge.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
    Creator of PoolMath and Pool Calculator. Other handy links: Support this site, TF Test Kits, Pool School

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    Re: Pipe Sizing and Return Question

    WFDS-4 1HP

    You guys are confirming that I"m not crazy and I understand what I read on here. Thanks.
    18 x 36 IG Vinyl Liner 28K Gallons
    Pentair Intelliflo VS+SVRS, Pentair CC + 420 Cartridge Filter, Easytouch CP with IC40 SWG
    2" Suction and Return Lines - 2 skimmers, 6 returns
    Dolphin Diagnostic Advantage Robot

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    Re: Pipe Sizing and Return Question

    You guys are confirming that I"m not crazy and I understand what I read on here
    Sadly, I fear the truth may be we are all equally crazy which is why we make so much sense to one another!!
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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    Re: Pipe Sizing and Return Question

    Quote Originally Posted by duraleigh
    You guys are confirming that I"m not crazy and I understand what I read on here
    Sadly, I fear the truth may be we are all equally crazy which is why we make so much sense to one another!!
    that explains it!
    I would use 2 1/2" on the skimmer

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