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Thread: 2" skimmer line and 1 1/2" main drain and returns?

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    Join Date
    Jun 2011
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    Mississippi
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    2" skimmer line and 1 1/2" main drain and returns?

    I am in the process of renovating my pool and replacing my skimmer. All the lines are 1 1/2", but rather than transition from the 2" skimmer to the old 1 1/2" pipe, I was thinking about just running new 2" all the way to the equipment pad. Will the 2" skimmer line cause any problems when the main drain and returns are 1 1/2"? Thanks in advance.
    45,000 gallon IG old (1960s??) painted concrete pool; rectangular 20' by 40' with 12' deep end; one skimmer in deep, two returns in shallow
    1 HP Hayward pump; Hayward Pro Series 300 lb sand filter Model S244T
    Aquabot T4 ("Rosie")
    TF100 Test Kit

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    Mod Squad jblizzle's Avatar
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    Re: 2" skimmer line and 1 1/2" main drain and returns?

    No problems. Likely a good idea.
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
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    Propbndr's Avatar
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    Re: 2" skimmer line and 1 1/2" main drain and returns?

    My pool uses 2" lines for the skimmers and 1 1/2" main drain and return lines. Every thing works great.
    Steve
    32 X 16 inground, 17260 gallons, Vinyl Liner, Triton II TR-60 filter,
    Sta-Rite 1hp pump Model #MPRA6E-147L, CircuPool SI-30 Plus SWG, TF-100 Test Kit

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    duraleigh's Avatar
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    Re: 2" skimmer line and 1 1/2" main drain and returns?

    Yeah not a bad idea but you will not see much change in the performance of your system.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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    Join Date
    Jun 2011
    Location
    Mississippi
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    35

    Re: 2" skimmer line and 1 1/2" main drain and returns?

    Thanks everybody. I didn't think it would pose a problem, but wanted to check. I am not really looking to improve performance, although that would be nice. I already have the deck torn up, so I was going to dig down in the yard to minimize the fittings I put under the deck. Since the equipment pad is only about fifteen feet away, I thought I might as well run the two inch all the way. So I can just transition back to 1 1/2" at the pad before connecting to the Jandy valve, right?

    Dave, this massive renovation I have tackled has pushed back my test kit renewal order. Sure ready to gets things put back together and just focus on water chemistry!

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