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Thread: New Flow Meter setup

  1. #1
    Join Date
    Mar 2013
    Location
    Merrimack, NH
    Posts
    586

    Default New Flow Meter setup

    My 2 post RO has been a Frankenstein project of mine the past few years. I had a NextGen Hobby RO and decided to upgrade it and turned it into a 2 post 200+ gallon per hour system.

    Ive noticed I had slow down during processing as I don't have a recirculate line setup, but I do recirculate straight from the concentrate tank until I get the % I want, usually 8%. Generally the slowdown has been my prefilter becoming clogged after running 400+ gallons through it. I wanted a way to tell if my filter was clogged and also wanted to monitor my flow rates. I had a piece of stainless that used to cover my old ProCon motor housing and decided to build flow meters into it and I will mount this to the top of the RO dolly. My issue that I still have is the 1/2BSP threaded ports of the flow meters weren't exactly easy to find barbed female couplings for them. I found a set and the inlet ports ended up being way too small, so I finally found a place in Buffalo that had the 1/2BSP Female couplings with 14mm barb which is close to 9/16". So I ordered those last night and now I will just wait until they get here and finish putting this together.

    Pix for your enjoyment, 3 meters, Raw Sap, Concentrate, and Permeate.
    IMG_3494.jpg
    IMG_3495.jpg
    IMG_3498.jpg
    IMG_3503.jpg
    2021 Twin Baby Boys, Close to 650 taps
    2020 Upgraded RO to 2 post and 7GBS Gould Pump. 265 taps
    2019 New Smoky Lake 2x6 raised flue, Simplicity Autodraw system, The Maple Guys Maple Jet Filter Press, a beautiful new bride to be my sugaring partner :-)
    2018 Deployed
    2017 Expanded Sugar Shack, new 2x6 with float box, NEXTgen Maple RO, 250+ taps (I hope for 300), still on sap sacks
    2016 New Sugar Shack, 2x6 evaporator, 160 taps, all on Sap Sacks
    2015 Deployed
    2014 110 taps
    2013 35 taps

  2. #2
    Join Date
    Aug 2009
    Location
    Wardensville, Wv
    Posts
    140

    Default

    looking for flow meters for my build did you find that the 5 gpm meters you used to be sufficient? I think they still sell the ones you used on amazon.
    2022 - 500 taps and hopefully an RO so so i don't have to throw out any sap!
    2021 - 48 Gallons - new pans, new arch, lots of new taps and tubing
    2020 - 32 Gallons
    2019 - 27 Gallons

  3. #3
    Join Date
    May 2009
    Location
    Essex VT
    Posts
    386

    Default

    Do you filter your raw sap before your prefilters? I know some people who do not filter before the RO prefilter, but I always have. I have a 2 bag (100 micron) filter system that filters the raw sap into a small tank that feeds the RO. After using RO's for 16 years, I have never had my RO prefilters plug or even noticeably slow down. Depending on the quality of the sap, some days the bag filters remove only a little junk and then other days, they remove a lot of junk.

    Joe
    2004- 470 taps on gravity and buckets
    2006- 590 taps on gravity and buckets 300 gph RO
    2009- 845 taps on vacuum no buckets, 600 gph RO
    2010- 925 taps on vacuum new 2 stage vacuum pump
    2014- 3045 taps on vacuum, new 1200 gph RO
    2015- 3104 taps on vacuum
    2017- 3213 taps on vacuum
    3' x 10' oil fired evaporator with steamaway

  4. #4
    Join Date
    Mar 2013
    Location
    Merrimack, NH
    Posts
    586

    Default

    I do not filter it before my prefilter. With the costs of the prefilters being so low I just prefer to stop and swap them out after I notice a slow down. Adding an extra filtering step when I have 500 gallon plus days would just add too much more time to the process.
    2021 Twin Baby Boys, Close to 650 taps
    2020 Upgraded RO to 2 post and 7GBS Gould Pump. 265 taps
    2019 New Smoky Lake 2x6 raised flue, Simplicity Autodraw system, The Maple Guys Maple Jet Filter Press, a beautiful new bride to be my sugaring partner :-)
    2018 Deployed
    2017 Expanded Sugar Shack, new 2x6 with float box, NEXTgen Maple RO, 250+ taps (I hope for 300), still on sap sacks
    2016 New Sugar Shack, 2x6 evaporator, 160 taps, all on Sap Sacks
    2015 Deployed
    2014 110 taps
    2013 35 taps

  5. #5
    Join Date
    Mar 2013
    Location
    Merrimack, NH
    Posts
    586

    Default

    They worked great for me, Ive already swapped them out though as I upgraded my RO again. I now am using 20GPM meters.

    Quote Originally Posted by darkmachine View Post
    looking for flow meters for my build did you find that the 5 gpm meters you used to be sufficient? I think they still sell the ones you used on amazon.
    2021 Twin Baby Boys, Close to 650 taps
    2020 Upgraded RO to 2 post and 7GBS Gould Pump. 265 taps
    2019 New Smoky Lake 2x6 raised flue, Simplicity Autodraw system, The Maple Guys Maple Jet Filter Press, a beautiful new bride to be my sugaring partner :-)
    2018 Deployed
    2017 Expanded Sugar Shack, new 2x6 with float box, NEXTgen Maple RO, 250+ taps (I hope for 300), still on sap sacks
    2016 New Sugar Shack, 2x6 evaporator, 160 taps, all on Sap Sacks
    2015 Deployed
    2014 110 taps
    2013 35 taps

  6. #6
    Join Date
    Aug 2009
    Location
    Wardensville, Wv
    Posts
    140

    Default

    Good to know, i want to make sure the flow meters i get are good for up to 2 4040 membranes even though i'll have just one for the 2022 season. One less thing to have to add when i grow one step bigger!
    2022 - 500 taps and hopefully an RO so so i don't have to throw out any sap!
    2021 - 48 Gallons - new pans, new arch, lots of new taps and tubing
    2020 - 32 Gallons
    2019 - 27 Gallons

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