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Old September 25th, 2017, 12:03 PM
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Default Used RO for the sugar house.

Well I broke down and bought a vintage Grimm RO that came over on the Mayflower, needs TLC, paint, a few parts replaced and some new parts to upgrade it.

Used RO for the sugar house.-20170919_120103.jpg
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Old September 25th, 2017, 06:36 PM
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congratulations, old or new, as long as it works will be a huge improvement in processing the syrup. You will wonder how you ever did it without an RO.
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Old September 28th, 2017, 09:03 PM
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Congrats Lew!!! I know you're going to love it
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Old September 29th, 2017, 10:50 AM
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I'm looking to replace the acrylic flowmeters, the concentrate has a max of 1.0 gpm and the black knob on top holding the ss rod and ball, threads are broke off. The permeate flowmeter is 2.0 max. The pump is a pressure wash style, and the membranes are two xle 4 40s in series. Any suggestions on flowmeter flow rates? Thanks .
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Old September 29th, 2017, 01:36 PM
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Quote:
Originally Posted by TLMaple View Post
I'm looking to replace the acrylic flowmeters, the concentrate has a max of 1.0 gpm and the black knob on top holding the ss rod and ball, threads are broke off. The permeate flowmeter is 2.0 max. The pump is a pressure wash style, and the membranes are two xle 4 40s in series. Any suggestions on flowmeter flow rates? Thanks .
0-5 gpm would be fine . Xle 4040 will do about 1gpm of permeate , little more when sap gets warmer .

That vessel looks to be monster ! Couple hundred for 2 ss vessels would make it much more user friendly. If you decide to replace vessel , look fo the type that has the o-ring that seals at the top lip instead of down inside the vessel. Much easier to remove and install membranes when needed .
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Old September 30th, 2017, 11:37 AM
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Mr. Wishlist
If an XLE 4040 will do 1 gpm, what will 2 in series do in gpm? I'm going to stick with monster vessel for now. if it gives me problems this coming season I will consider new vessels.
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Old September 30th, 2017, 03:10 PM
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It depends a lot on the pump pushing the sap, but typically a 4x40 xle run at 275 PSI will process about 125 gph at 37F. At that rate, it will remove roughly 3 parts permeate to 1 part concentrate. If it's run at a lower pressure the concentrate to permeate ratio falls and if it's able to run at a higher pressure it can do better. The big question is really not how much that membrane can do, but how much the pump will move at what operating pressure. That will then give a performance rate for that membrane. The membrane can take far higher pressure, thus the limiting factor is how much pressure the canister the membrane is in can take. Some 4x40 canisters are rated at 200 psi, some at 250 psi mine are rated 300 psi and some might be higher. In larger canisters, like 8x40 and larger many canisters are rated at 450 and even up to 600 PSI. I'm not aware of any over 300 in 4x40, but there might be.
If you have the right pump, 2 in series will do double that.
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Old September 30th, 2017, 06:55 PM
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My experience has been with 1 membrane , then 2 , and for the last 2 years 3 in series . I use a feed pump and my booster pump is a Goulds multistage . I'm close to the max flow that xle ( extra low energy) 4040's are rated. My best performance isn't from high pressures, although I can squeeze it down over 230 psi , I typically run at 180-190 psi. If I run at higher pressures I don't notice much in the way of more flow of permeate although you will foul the membrane sooner . Last season with the 3 membranes I had a couple days with 1300 plus gallons and I could easily get it to 12 percent without fouling the membranes . This isn't done with one pass , I recirculate to a concentrate tank .

TL , I agree with Dave on what kinda of pump your have pushing the sap. Higher flows will let you run the ro longer without seeing reduced flows and fouling . Also , what percent do you want to boil ? If you have a 125 gph pump your not gonna get to 10 percent sap.
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Old October 4th, 2017, 03:46 PM
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Quote:
Originally Posted by wishlist View Post
0-5 gpm would be fine . Xle 4040 will do about 1gpm of permeate , little more when sap gets warmer .

That vessel looks to be monster ! Couple hundred for 2 ss vessels would make it much more user friendly. If you decide to replace vessel , look fo the type that has the o-ring that seals at the top lip instead of down inside the vessel. Much easier to remove and install membranes when needed .
This “monster” is easy to maintain. The ends are just vitalic couplers. Slip the gasket over the ends and put on a clamp. If other vessels are used there will have to be hoses added.
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Old October 5th, 2017, 09:49 PM
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Ro is the way to go. Last year was the first year for me and like so many others I have I will never be without one!
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