Vacuum generators
I am planning to install a traditional 5/16 tubing system and am looking at different ways to get high vacuum (26 in Hg). My system will have an 800' vacuum line and a similar length returning sap line with needing to lift approximately 20'. I am wondering if a vacuum generator rather than a vacuum pump could be used to generate the vacuum needed for the system. I was wondering if something like the Gast VG-260-02-00 could be used to create the vacuum?
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
2022: 600+ taps
are you looking for something like this?
http://mapletrader.com/community/att...9&d=1549490184
It can also be set up with larger reservoirs or with a venturi and air compressor.
The way this is set, my vacuum pump turns off at 26.5 inches +/- and on at 19 inches of vacuum. I went this route for my needs as it is quite. I did not want my air compressor running in the background generating all that noise so that ruled out the venturi arrangement.
Last edited by Chickenman; 02-12-2019 at 05:35 AM.
backyard hobbyist
Mason 2x3 w/AUF
2020 - added small vacuum and gravity 5/16 tubing and sap sacks
N 42* 18' 31."
W 79* 34' 15."
https://www.saptapapps.com/map/31868...-aab748a6394e/
I'm looking at the venturi vacuum generator. Something like this
https://gastmfg.com/products/compres...s/vg-130-00-00
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
2022: 600+ taps
I would have guessed that the vacuum generator is for when a mechanical system already uses compressed air and a vacuum line is needed to control a valve or something. I wouldn't think it would be efficient to generate compressed air and continuously release air just so one could create a vacuum system. But I'm really no expert.
Ken & Sherry
Williston, VT
16x34 Sugarhouse
1,500 taps on high vacuum, Electric Releaser & CDL Sap Lifter
Wood-Fired Leader 30"x10' Vortex Arch & Max Raised Flue with Rev Syrup Pan & CDL1200 RO
https://www.facebook.com/pumpkinhillmaple/
Look at Joewoodworkers veneering vacuum press. He has a set up using a venturi system. In the gallery their are several examples of others builds that might fit your needs. For some odd reason my computer is acting up and I cant get a link to work for you.
backyard hobbyist
Mason 2x3 w/AUF
2020 - added small vacuum and gravity 5/16 tubing and sap sacks
N 42* 18' 31."
W 79* 34' 15."
https://www.saptapapps.com/map/31868...-aab748a6394e/
Thanks. Will check that out.
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
2022: 600+ taps
That is a new concept to me, I read what Gast says, but I'm unsure. Do you have the air pressure to make it work? I did not read how many CFM of air pressure at what PSI is needed to make that work.
Dave Klish, I recently ordered a 2x6 wood fired evaporator from A&A Sheet Metal which I will be converting to oil fired
Now have solar, 2x6 finish pan, 5 bank 7x7 filter press, large water jacketed bottler, and tankless water heater.
Recently bought another Gingerich RO, this one was a 125, but a second membrane was added thus is a 250, like I had.
After running a 2x3, a 2x6, 3x8 tapping from 79 taps up to 1320 all woodfired, now I'm going to a 2x6 oil fired and a 200-425 taps.
Flats
For this particular vacuum generator, it uses 4.9 CFM of air at 68 psi.Do you have the air pressure to make it work? I did not read how many CFM of air pressure at what PSI is needed to make that work.
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
2022: 600+ taps
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