They definitely work better once the solvent is cold. Haven’t had any problems with pulling (priming) directly from rm temp barrels.
“Don’t hate them” might too feint a praise, but saying I loved them would also be inaccurate.
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Should work with rm temp ethanol.
Dubious about their performance at -80C.
They are described as “low volume metering pumps”, which isn’t really what we are trying to achieve.
If they can pull against a vacuum, there are other places they might be appropriate
Sooo… the $400 methanol fuel (gear) pump is currently the best option I’ve tried. There are a couple of other good options that I haven’t played with yet & I still need to give this thing a decent workout, but it primes AND moves lots of solvent. We’ll see how it does against a filter…
Or at -80 whichnit is not rated for 
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Thats why I got an AI oven and an re-501
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Looks like they’ve got a 12gpm 115V model. I might have to go ahead and get one. GPI - M-1115S Methanol Pump 115V AC
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Worked great until we burst a bag. Intake screen clogged imediately. Not the pumps fault, but needs noting.
Both pushed and pulled, including priming, through a filter. Almost emptied it too (pumping air). Cold didn’t phase it. Not as fast as N2 (and N2 does that other stuff).
Caveats: Came lubicated. Intended for fuel not food. Leave intake screen accessible or supplement it with something both bigger & smaller.
Materials and construction appear appropriate. I removed lubricant and cleaned everything thoroughly.
Want the ability to feed it 3-20V and reverse it. Should be fairly simple.
Might make more sense to play similar games with the AC version.
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Does anybody know about these? For homebrewing from australia. Its rated up to 120C They have a bigger model and they offer a stainless housing. Theyre cheap like next to nothing. I wonder how it would work cold?
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This looks to be a good option, compared to the CPE Systems unit…about the same price, but has wireless remote options…and 2hp…
CIP pump that is explosion proof
https://www.alfalaval.com/products/fluid-handling/pumps/centrifugal-pumps/lkhex/
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Buy one and test it share results- I want one.
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Looks great, except the blurb says it works because the impeller is flexible…
So I have doubts about running it much below -20C
There are very few elastomers that play well at -80C
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If you’re in the US, note that those Aussie pumps have British Straight Pipe fittings, and want 220V. Both are doable.
They should run faster at 60hz that 50
As for how they deal with cold…?!?
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Alfa Laval makes great equipment, but good luck getting them to spend much time with you if you’re less than a $1M/year annual client. Also be prepared to pull out your wallet, I’ve never seen an instance where I personally felt Alfa equipment was on the right side of the cost/value equation.
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yeah, I did see that. Thanks for detailing that knowledge, I’ll keep it in mind when researching.
Any more input on Magnatex pumps? i spoke with them and they seem pretty reasonably priced. 7k with an explosion proof motor. They have an option to put an air motor in it but i have not quoted yet. I noticed the other quote posted had a head pressure of 147ft. This is really high i think. Can anyone tell me what they are estimating for theirs? My estimate is 10ft high(10), 30ft pipe(3) 4 turns (4) loss(3) = 20.
This is what I was considering.
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Looking good! Do you have a link?
Up thread!!!
Link to 110V also up thread!
And I apologize for not linking again or at least stating that it was the Western Equipment fuel pump @Soxhlet tried to talk me out of 
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Still looking for some more input. Im looking for a 100 gpm pump, rated to atleast -70 and would prefer an air driven motor as it will be easier to put into the c1d1 room.
Or am i over estimating the trouble of using an ATEX rated motor in the c1d1 room.
Any insight is greatly appreciated.