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Thread: What pump to use for a ro?

  1. #1
    Join Date
    Dec 2012
    Location
    Middlebury vt
    Posts
    24

    Default What pump to use for a ro?

    Iíve gotten down the membranes and housings etc. I hear the high the psi the higher brix you can push out?!?!? Setting up something for 300psi seems pretty easy with a pro-con fluid-o-tech or a Goulds multi stage with a low pressure feeder. I see a lot of these membranes are rated up to 600psi and Iím finding frp vessels that will take 1000psi. So if I wanted to get into the 500-550 psi range so where between 4-600gal/hr what pumps are being used. Looks like there multi stage boosters paired in line? Can the pump housings handle being plumbed in series?

    I have a 30x8 leader with revolution pans. Iím going to have about 550 taps for 2021. 2022 around 1200 taps with expansion each year to a certain point untill 2500 taps I would say thats all I want to get into.
    I love the idea of a smaller rig, Iím mainly a one man show and itís just easy to run and clean. My thought is higher the brix the least likely to have to get a larger evap. Most small units on the market seem to be more in the 200psi range? I know I could do a steam away........ but at that point Iíd most likely just want to buy a larger rig. The steam always are super awesome but the resale value just isnít there just for the unit and the over all value of the rig doesnít really go up compared to the $10g you spend on them.

    Any input would be great
    30x8 leader drop flue
    400 taps and counting
    20x30í sugar house
    2 vacuums and releasers sitting in the basement not being used.
    John Deere 3005
    Bobcat 753

  2. #2
    Join Date
    Jan 2020
    Location
    Canaseraga ny
    Posts
    12

    Default

    So I am in the same boat as you with tap count. We are around 400 taps but looking to probably double that next year and need to build an RO to handle. I currently have a two post R/O with 4x40's that has worked great for our current numbers - but rapidly outgrowing.

    I have started to put together the components to build a single 8x40 that will be expandable to atleast 2 - 8x40 posts. I just purchased a 5HP Goulds 3sv22 SS multi-stage high pressure pump to build my system around. This is a 3 phase motor so will need a VFD incorporated in the pump control. I will also have a SS feed pump and a SS recirc pump. Right now i am planning on using an extra SS Pro-con 240 GPH as my recirc pump (just because I have it lying around) but will be limited to around 250 - 300 PSI due to its max PSI rating, but am building everything rated to 450 PSI in case I decide to use a different recirc pump later. I like the idea of using a procon for a recirc pump as they do not generate the heat that the multi stage pumps will on the sap. Lastly, I will use a SS sprinkler pump for feed, probably a 1HP.

    All plumbing will be 1-1.5" SS tubing with tri-clamp on the pressure side and 1" re-inforced clear tubing on the discharge sides.

    Either 1 - 40" pre-filter housing or 2 - 20" housings.

    High temp, high and low pressure shut-offs, .5-10 gpm flow meters on the concentrate and permeate lines and SS 1" needle valves.

    Digital pressure switch:
    https://www.dwyer-inst.com/Product/P...ches/SeriesEDA

    Multi-stage pump:
    https://goulds.com/centrifugal-pumps...tab-literature

    Sounds like we are aiming to build similiar units. This is the start to the planning on mine. Want to get it built or at least layed out while I am in the maple frame of mind. Anyone else feel free to chime in on the good, the bad, or any recommendations.

    Mike & Pat
    Belle Hollow Syrup
    Canaseraga, NY

  3. #3
    Join Date
    Mar 2015
    Location
    Esko,MN
    Posts
    256

    Default

    Where did you get your membrane housing? Did you figure out your pump situation?
    Chad

    2014: 12 taps, 5 gal buckets
    2015: 15 taps on bags
    2016: 150 taps: 100 on bags, 50 on 3/16" natural vac, 2x8 AUF/AOF Homebuilt Arch, 2x8 SL Drop Flu & Auto Draw, SL Propane Canner/Bottler
    2017: 225 taps: Built Lean to, Added SL hood, preheater, concentric exhaust, SL SS 7" SB Filter Press
    2018: 180 taps: Added Shurflo to 50 - 3/16", Auto fill sensor to head tank
    2019: No tapping
    2020: 175 taps
    2021: 300 taps, homemade RO and releaser

  4. #4
    Join Date
    Jan 2020
    Location
    Canaseraga ny
    Posts
    12

    Default

    I am awaiting quotes from 2 suppliers on the 8x40 housings - will let you know when I get them back.

    As far as pumps - I purchased the goulds 3sv22 5HP high pressure multi-stage pump (3 phase so need a VFD. Going with the Cerrus X-Drive that MES offers 10HP)
    - I am going to buy a 1ST Goulds SS 1.5HP pump for the feed pump
    - Plan right now on using my 240GPM series 5 procon for the recirculation pump.

  5. #5
    Join Date
    Mar 2015
    Location
    Esko,MN
    Posts
    256

    Default

    Do you have an approximate idea on how much your build will cost?
    Chad

    2014: 12 taps, 5 gal buckets
    2015: 15 taps on bags
    2016: 150 taps: 100 on bags, 50 on 3/16" natural vac, 2x8 AUF/AOF Homebuilt Arch, 2x8 SL Drop Flu & Auto Draw, SL Propane Canner/Bottler
    2017: 225 taps: Built Lean to, Added SL hood, preheater, concentric exhaust, SL SS 7" SB Filter Press
    2018: 180 taps: Added Shurflo to 50 - 3/16", Auto fill sensor to head tank
    2019: No tapping
    2020: 175 taps
    2021: 300 taps, homemade RO and releaser

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