+ Reply to Thread
Results 1 to 7 of 7

Thread: DeLaval no 20 pump

  1. #1
    Join Date
    Jan 2008
    Location
    Skowhegan, Maine
    Posts
    285

    Default DeLaval no 20 pump

    This is not for Maple, although we do tap 150 on buckets, but for a small milking parlor. I just picked up a DeLaval no 20 vacuum pump. It runs and pulls vacuum but only 10-11 inches. It currently has a 1/2 hp motor on it and is running counter clockwise, which is opposite of my Lehman pump. Was looking for any info anyone has on it. RPMís itís supposed to run, HP motor it should have, direction? I need 14Ē to milk and 6-8 CFM ideally. Also if anyone has a lead on parts.

    Thanks
    Jason
    200 Taps homemade 27x76 evaporator with 48" flued pan,

    www.tessiersfarm.com

  2. #2
    Join Date
    Mar 2012
    Location
    Walpole, NH
    Posts
    1,109

    Default

    Do you have any pictures you can post? I have worked on a lot of DeLaval pumps but not heard of a no20. Most DeLaval pumps have a direction of rotation arrow cast into one of the end plates. Most common cause of low vacuum is stuck vanes or scored barrel. Easy to pull the drum out, just unbolt the end caps and slide it out. Vanes should slide in and out freely, the edges against the barrel shouldn’t have any chips or grooves, and the inside of the barrel should be smooth.
    Sugaring for 45+ years
    New Sugarhouse 14'x32'
    New to Me Algier 2'x8' wood fired evaporator
    225 Sugar Maples Currently,(105 on 3/16" and 110 on Shurflo 4008 vacuum, 10 gravity), (16,000 before being disabled)
    1947 Farmall H and Wagon with gathering tank
    2012 Kubota with forks to move wood around

  3. #3
    Join Date
    Jan 2008
    Location
    Skowhegan, Maine
    Posts
    285

    Default

    I pulled it apart inside looks good veinís look good 2 seamed a little sticky I cleaned them up. No direction markings on the ends. I drained the Oiler, when I pulled the cap off, so I need to add oil then will try again. I donít know how to do pictures, will get someone to help a little later.
    200 Taps homemade 27x76 evaporator with 48" flued pan,

    www.tessiersfarm.com

  4. #4
    Join Date
    Jan 2008
    Location
    Skowhegan, Maine
    Posts
    285

    Default

    DeLaval 20.jpg DeLaval 20
    DeLaval 20 a.jpg After loosening up the veins it builds 20 inches of vacuum, thats a good sign. Still not sure on CFM's
    200 Taps homemade 27x76 evaporator with 48" flued pan,

    www.tessiersfarm.com

  5. #5
    Join Date
    Mar 2012
    Location
    Walpole, NH
    Posts
    1,109

    Default

    That’s good on vacuum level. Sticking vanes will keep it from making full vacuum. 20” is probably about all that pump will make. From the looks of the pictures, counter clockwise is the correct direction.
    Last edited by BAP; 09-14-2020 at 05:37 AM.
    Sugaring for 45+ years
    New Sugarhouse 14'x32'
    New to Me Algier 2'x8' wood fired evaporator
    225 Sugar Maples Currently,(105 on 3/16" and 110 on Shurflo 4008 vacuum, 10 gravity), (16,000 before being disabled)
    1947 Farmall H and Wagon with gathering tank
    2012 Kubota with forks to move wood around

  6. #6
    Join Date
    Jan 2008
    Location
    Skowhegan, Maine
    Posts
    285

    Default

    I only need 14 inches of vacuum to milk, so thats no big deal to me, I was just worried that 11 inches is not enough to milk, but the inside looks good to me. I really don't even care on CFM's it just barely has enough now, I will speed it up a little with a bigger motor and it is going to work out great.

    Thanks for the input.

    Jason
    200 Taps homemade 27x76 evaporator with 48" flued pan,

    www.tessiersfarm.com

  7. #7
    Join Date
    Jan 2006
    Location
    Oneida NY
    Posts
    10,516

    Default

    For parts check out https://hambydairysupply.com
    Maybe they will have parts. If not, just try a Google search, that may find a supplier who has parts.
    Dave Klish about 1320 taps in '15, downsized after I lost my help, about 450-500 planned for 2021 (and after?)
    2012 Mahindra 36 HP 4x4/ loader/cab/heat/AC:-)
    3x8 raised flue evaporator
    250 GPH converted to electric, RO by Ray Gingerich
    6.32 KW solar system, 1.48KW is battery backed up, all net metered
    http://s1041.photobucket.com/albums/...anssugarhouse/
    website: www.cnymaple.com

+ Reply to Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts