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Thread: RO Intake and Output Tube Lengths

  1. #1
    Join Date
    Mar 2019
    Location
    CT
    Posts
    247

    Default RO Intake and Output Tube Lengths

    Hey All,

    Just starting to plan out the new system...
    I've built a 4 membrane RO similar to the RO Bucket with an Aquatec 8852.
    I'm wondering how long the feed and output lines can be.
    I'd like to keep my holding tank and head tank about 25' apart, with the RO in the middle.
    Should I be worried about 15' of supply and 15' of output line on my small RO?

    Thanks,

    Bryan
    2024 - 160 taps, Shurflo 4048. Sap Sucker 4-D. Mason 2x4 Raised Flue. 5x400 RO.
    2023 - 121 taps. Shurflo 4008. Sap Sucker 4-D. Mason 2x4 XL, 4x150 RO. 20 gallons.
    2022 - 103 taps. Shurflo 4008. Sap Sucker 4-D. Mason 2x4 XL, 4x150 RO. 23 gallons.
    2021 - 77 taps on Shurflo 4008. Sap Sucker 4-D. Mason 2x4 XL, 4x150 RO. 22 gallons.
    2020 - 70ish taps on Shurflo 4008. Mason 2x4 XL. DIY R.O. ~24 gallons.
    ______________________________________________
    Trout Brook Valley
    Weston, CT

  2. #2
    Join Date
    Mar 2015
    Location
    Peoria, IL
    Posts
    634

    Default

    Easiest for the pump would be short intake and long output. I would put the RO next to your collection tank. Harder for most pumps to pull a long ways than push a long ways.
    Camp Wokanda
    Peoria Park District

    2023 - 210 on 3/16 shurflo, sap storage shack w/ 1100 gallon tank - 123 gallons
    2022 - 210 on 3/16 shurflo, homemade vac filter & water jacket canner - 104 gallons
    2021 - 215 on 3/16 shurflo, added 2nd membrane to RO - 78 gallons
    2020 - 210 on 3/16 shurflo, upgraded hp pump on RO - 66 gallons
    2019 - 150 on 3/16 shurflo, Deer Run 125 dolly RO - 73 gallons
    2018 - 120 on 3/16 shurflo, 2x6 raised flue w/hood, homemade arch w/ AUF & AOF - 34.5 gallons

  3. #3
    Join Date
    Jan 2006
    Location
    Oneida NY
    Posts
    11,578

    Default

    Another thing that helps is if the suction line is one size larger, I learned that when I grew commercial strawberries. The irrigation pump was a 3" fire pump Then the suction line from the pond was 4"x20'. That gave me far better flow than a 3" x20' did.
    If you place the RO within 2-3 feet of the sap supply tank I wouldn't worry, if you need it 15' away, use 1 size larger diameter and no elbows near the pump.
    Dave Klish, I recently ordered a 2x6 wood fired evaporator from A&A Sheet Metal which I will be converting to oil fired
    Now have solar, 2x6 finish pan, 5 bank 7x7 filter press, large water jacketed bottler, and tankless water heater.
    Recently bought another Gingerich RO, this one was a 125, but a second membrane was added thus is a 250, like I had.
    After running a 2x3, a 2x6, 3x8 tapping from 79 taps up to 1320 all woodfired, now I'm going to a 2x6 oil fired and a 200-425 taps.

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