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Thread: 600 gph RO tubing size

  1. #1
    Join Date
    Dec 2006
    Location
    NE PA (Pocono's)
    Posts
    1,374

    Default 600 gph RO tubing size

    Wondering what size tubing guys have after sap is processed thru an RO. I only have 3/4" going from my RO valve panel to my evaporator feedtank and my re-circulation line back to sap tank. I had no problem last year with this size tubing but I did add another couple valves so I could switch around sap tanks and noticed my RO pressure this year is high. Starts around 375psi and by the time I concentrate around 10% its 450psi+. Could the extra valves be causing some back pressure? Or gauge might be bad? My concentrate and high pressure valaves are open way more than I usually run also.

    Thanks
    Mike
    Algier 2x6
    Around 2500 taps
    Polaris ATVs, Ski Doo snowmobiles to get around
    Sp-22 power and lots of tanks
    Lapierre 600 RO




    http://s272.photobucket.com/albums/j...Sugar%20shack/

  2. #2
    Join Date
    Feb 2011
    Location
    Eagle lake Maine
    Posts
    198

    Default

    My Econonox 600 gph has a 1" line for processed sap.

  3. #3
    Join Date
    Mar 2008
    Location
    Barrington, NH
    Posts
    2,565

    Default

    Interesting. Unless the gauge is spun and no longer rests at 0psi, I think the gauge should be good. Last week, I found my post-prefilter pressure gauge now reads ~100psi at rest and something more than that when in operation.

    I ran 1" for all my discharge piping.
    Josh

    2009 - 370 on vacuum and 16 buckets
    2010 - 377 on high vac.
    2011 - 590 on high vac.
    2012 - 620 on high vac., 170 buckets, 110 on gravity tubing
    2013 - 830 mine + 800-1000 from others
    2014 - 870 mine + 800-1000 from others
    2017 - 920 mine + 500-700 from others.
    2018 - 902 mine + 500-700 from others.
    2019 - 902 mine + ???? from others.
    Atlas Copco Pump
    2.5'x8' 802maple Special with Dallaire pans
    H2O Innovation 600gph RO
    Spring Harvest Website

  4. #4
    Join Date
    Apr 2017
    Location
    Pittsfield, NH
    Posts
    74

    Default

    I ran 1" for all output but you should be fine with 3/4" certainly for the concentrate.
    Matras Maple

    Started 15 years ago as backyard operation.
    Now have a 1325 taps and growing.
    Boiling on a 2.5x8 leader infurno with steamaway.
    New for 2019 a cdl 600 expandable RO, another bush on vac.

  5. #5
    Join Date
    Mar 2004
    Location
    Northeastern Pa
    Posts
    415

    Default

    We have one inch for both permeate and concentrate.

  6. #6
    Join Date
    Nov 2010
    Location
    Barnet, VT
    Posts
    2,452

    Default

    On my 900 I use 1” permeate and 3/4 for concentrate with no problems.
    William
    900 taps plus 1200 purchased sap
    3 X 12 Thor pans on a Brian design arch
    1986 Seprotech 900 RO

  7. #7
    Join Date
    May 2011
    Location
    Chatham NH
    Posts
    1,160

    Default

    Both the permeate and concentrate are 3/4 on mine, but it was suggested to me by my CDL rep to put a 1" on the permeate line , I haven't gotten around to it but I need to.
    Nate Hutchins
    Nate & Kate's Maple
    2018 1000 taps?
    20x36 sugarhouse
    CDL 600gph RO
    Franken evaporator, lapierre arch, smokylake pans and a leader hood with pre-heater.
    A wife and 2 kids.

  8. #8
    Join Date
    Mar 2011
    Location
    Potter County, PA
    Posts
    817

    Default

    I use 3/4 for both output lines. Valves could cause dome pressure... but not a lot ( unless they are closed). Your membrane is probably fouled up and needs a good cleaning.
    2008 4 buckets
    ~
    2016 1300 vac tubing
    18x24 sugar shack
    2x6 Grimm Lightning w/preheater on natural gas
    7" full bank press
    CDL 600 RO
    2000 Sonoma w/ 200gal tank
    2003 Duramax w/ 500 gal tank
    2 sap guzzling kids
    very patient wife!

    Same ol' addiction

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