Become a TFP Supporter Pool Math Forum Rules Pool School
Results 1 to 7 of 7

Thread: Skimmers with 2" or even 2.5" connections? Wall fittings that size as well?

  1. Back To Top    #1
    MitchRyan912's Avatar
    Join Date
    Jul 2015
    Location
    Madison, WI
    Posts
    314

    Skimmers with 2" or even 2.5" connections? Wall fittings that size as well?

    We may be in position to redo the fittings and skimmer in our vinyl liner pool, as we are putting in a new liner along with everything else we are doing (pump, heater, new MPV on our filter, & pipes - all in a new pad location).. As such we will be putting in 2.5" pipe instead of the 2" we were planning to install.

    if we are able to do so, is it worthwhile to go ahead and upsize the fittings and /or skimmer?
    2016 total pool rebuild thread: here. Pool: 26,000 gal IG vinyl liner (20'x40') in Madison, WI. Gear: ​Superflo VS, Triton TR-60 filter, 2" hi-flow MPV, & Raypak 266A heater. Testing: Taylor K-2006C. Manual chems: 12.5% NaClO liquid, granular CYA, baking soda, 31.25% muriatic acid.

  2. Back To Top    #2

    In the Industry

    duraleigh's Avatar
    Join Date
    Apr 2007
    Location
    Sebring, Florida
    Posts
    30,077

    Re: Skimmers with 2" or even 2.5" connections? Wall fittings that size as well?

    Not really. For that matter, the 2.5" pipe will yield little value in a 26k pool.

    The important things to remember is to match pump and filter and then match that to the size of your pool.

    2" pipe is gracious plenty for a 1 or 1.5 HP 2-speed pump and 30" filter on a pool that size.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

  3. Back To Top    #3
    MitchRyan912's Avatar
    Join Date
    Jul 2015
    Location
    Madison, WI
    Posts
    314

    Re: Skimmers with 2" or even 2.5" connections? Wall fittings that size as well?

    Wouldn't we be able to move more water and reduce pump run time with 2.5" pipe?

    We're buying a Superflo VS and a high-flow MPV for the TR-60 we own. We're going to see if the TR-60 even works (it's at least 30 years old, but I put a new hub & laterals in last year). If it doesn't, the TR-60 will be plumbed in a way that we could drop in a TR-100 later. We were about to pull the trigger on buying a new TR-100, but decided the new valve route would be a money saver for the time being.
    2016 total pool rebuild thread: here. Pool: 26,000 gal IG vinyl liner (20'x40') in Madison, WI. Gear: ​Superflo VS, Triton TR-60 filter, 2" hi-flow MPV, & Raypak 266A heater. Testing: Taylor K-2006C. Manual chems: 12.5% NaClO liquid, granular CYA, baking soda, 31.25% muriatic acid.

  4. Back To Top    #4
    MitchRyan912's Avatar
    Join Date
    Jul 2015
    Location
    Madison, WI
    Posts
    314

    Re: Skimmers with 2" or even 2.5" connections? Wall fittings that size as well?

    The longest suction run is about 53' (deep end low wall vacuum).
    The shortest suction run is about 40' (skimmer).
    The return is about 27' long.

    Would it make any sense to just run 2.5" pipe on the suction lines? How about just the long vacuum line?
    2016 total pool rebuild thread: here. Pool: 26,000 gal IG vinyl liner (20'x40') in Madison, WI. Gear: ​Superflo VS, Triton TR-60 filter, 2" hi-flow MPV, & Raypak 266A heater. Testing: Taylor K-2006C. Manual chems: 12.5% NaClO liquid, granular CYA, baking soda, 31.25% muriatic acid.

  5. Back To Top    #5
    mas985's Avatar
    Join Date
    May 2007
    Location
    Pleasanton, CA
    Posts
    11,481

    Re: Skimmers with 2" or even 2.5" connections? Wall fittings that size as well?

    You will get a little higher flow rate or lower RPM for the same flow rate with the larger pipe. Also, the suction would be less in the pump basket and thus less likely to suck in air. But would you be installing 2.5" poly?

    BTW, for the same flow rate, the change in RPM would probably be around 5% and 10% in energy savings. But you would have to reduce the RPM to achieve those savings.
    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

  6. Back To Top    #6
    MitchRyan912's Avatar
    Join Date
    Jul 2015
    Location
    Madison, WI
    Posts
    314

    Re: Skimmers with 2" or even 2.5" connections? Wall fittings that size as well?

    I think we are leaning towards leaving it as is, with 2" poly. Now to consider if it is worth a little more digging to add a second return, since we are messing with the liner...
    2016 total pool rebuild thread: here. Pool: 26,000 gal IG vinyl liner (20'x40') in Madison, WI. Gear: ​Superflo VS, Triton TR-60 filter, 2" hi-flow MPV, & Raypak 266A heater. Testing: Taylor K-2006C. Manual chems: 12.5% NaClO liquid, granular CYA, baking soda, 31.25% muriatic acid.

  7. Back To Top    #7
    MitchRyan912's Avatar
    Join Date
    Jul 2015
    Location
    Madison, WI
    Posts
    314

    Re: Skimmers with 2" or even 2.5" connections? Wall fittings that size as well?

    I had assumed there were larger wall fittings available, and since it doesn't look like there are, I'll stick with the 2" pipe, so there's only one adaption from 1.5" to 2", rather than 1.5" to 2" to 2.5".
    2016 total pool rebuild thread: here. Pool: 26,000 gal IG vinyl liner (20'x40') in Madison, WI. Gear: ​Superflo VS, Triton TR-60 filter, 2" hi-flow MPV, & Raypak 266A heater. Testing: Taylor K-2006C. Manual chems: 12.5% NaClO liquid, granular CYA, baking soda, 31.25% muriatic acid.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •