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Thread: Shurflo diaphragm pump vaccum

  1. #1
    Join Date
    Mar 2021
    Location
    Massachsuetts
    Posts
    8

    Default Shurflo diaphragm pump vaccum

    I only recently learned of the use if a shurflo diaphragm pump to create vacuum on 3/16 lines. Now I learn this is in widespread use.

    1. What can I expect for increased yield by properly using this system.

    2. Any advice instructions or diagrams for properly wiring and plumbing this system would be appreciated. I intend to run 2 off of 12v deep cell car batteries.

    Thanks.

  2. #2
    Join Date
    May 2011
    Location
    River Falls, WI
    Posts
    776

    Default

    Quote Originally Posted by Gr8dad View Post
    I only recently learned of the use if a shurflo diaphragm pump to create vacuum on 3/16 lines. Now I learn this is in widespread use.

    1. What can I expect for increased yield by properly using this system.

    2. Any advice instructions or diagrams for properly wiring and plumbing this system would be appreciated. I intend to run 2 off of 12v deep cell car batteries.

    Thanks.
    I'm lazy. I plumb the 1/2" npt threads of the pump to a simple strainer and then to a piece of 1" mainline with a couple saddles and a 6-way star fitting. I make some 2 wire extension cords and hook them to whatever car battery I have handy. I run about 4-500 feet of extension cord and hook up a battery charger to the battery. Works great. I leave my pumps on 24/7 during the season.

    I've been right around .6 gallons per tap every year since I started using them. About double our previous number.
    Second generation sap rat.

    Started taking over in 2012
    2012-2016: 300 buckets 120 on gravity tubing. Waterloo 2x10 wood fired. Averaged 105 gallons per season.
    2017: hoping for 300 on 3/16 with Shurflo and 50 buckets. New used 4x14 Algier wood fired cooker. 180 gallons of syrup

    2018: 300 on vacuum 2 buckets, finally got a splitter!

  3. #3
    Join Date
    Mar 2021
    Location
    Massachsuetts
    Posts
    8

    Default

    Thank you.

    Do I need a fuse or 12v 15amp ac/dc converter between the battery and pump?

    I am going to hook the batter to 200watts of solar panels.

  4. #4
    Join Date
    Feb 2019
    Location
    Murrysville, Pennsylvania
    Posts
    136

    Default

    The yield increase depends on multiple factors such as:
    (1) age of system- new install has great yield in 1st year
    (2) amount of elevation drop (the more drop = more vacuum = more yield)
    (3) how leak tight the system is
    (4) length of laterals - friction losses on longer runs
    (5) number of taps per lateral - too few or too many hurt you.
    (6) weather 

    I did 3/16 on a diaphragm pump for the first time this year. I used an aquatec 8852 instead of a shurflo because I had it from a smaller RO I used to have. It worked amazing. Here are some numbers for comparison:
    (1) better seasons on buckets yielded 0.17 gal of syrup per tap. Vacuum using a diaphragm pump like a shurflo put me at 0.275 gal/tap of syrup. ~62% increase in yield.
    (2) local friend (within 3 miles) who tapped same day, and pulled taps on the same day, and had comparable number of taps and was on short 5/16 drop tubes into buckets got 0.055 gal/tap of syrup. In years past our syrup/tap were always very comparable. This year I got 0.275 gal/tap. That's 500% increase.
    (3) plenty of actual studies show average of double yield if you achieve good vacuum given the variables above.

    Neither of my numbers are from perfect controlled experiments, but it is more than enough to convince me there is significant yield increase from using vacuum on 3/16 if you have good slope already.

    Was able to get ~25 inHG with over 100ft of drop from top to bottom. Had over 80 taps on 5 lines, some up to 1100 ft long. Averaged more than 1 gal of sap per tap per day. 19 gal of sap per tap on a short season.

    Diagram
    Attachment 22333

    Video
    https://youtu.be/ni3ScN3lhZs
    Last edited by DRoseum; 04-04-2021 at 12:15 AM.
    D. Roseum
    www.SugarTree.Run
    ~100 taps on 3/16 custom temp controlled vacuum; custom nat gas evap with temp and level controllers; homemade RO; SL SS filter press
    2021: 27.1 gallons

  5. #5
    Join Date
    Jun 2011
    Location
    Northern Michigan
    Posts
    441

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    Our sugarbush is about 1/2 mile from our sugarhouse and any available electricity. Previously we had to retrieve our 4 batteries every evening to recharge them. This past season we purchased two 700 watt propane inverter generators (Home Depot and Amazon carry them) that we used to power four battery chargers to keep the batteries fully charged all the time, regardless of the weather. Definitely an option if you don't have electricity nearby or if you don't want to rely on solar. It is great when the sap continues to flow overnight because the batteries remain fully charged all the time.
    Gary
    16' X 24' Sugarhouse
    2' X 6' Leader Inferno Arch with Revolution Raised-Flue Pans, Smoky Lake preheater and hood
    Deer Run Maple gas-powered 250 RO
    WesFab 7" filter press
    Kubota 1100 RTV with tracks and 125 gallon tank for transporting sap
    600+ taps on gravity and vacuum
    Very supportive wife who is the best coworker
    http://mapletrader.com/community/sho...ing-Sugarhouse

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