Haskel pneumatic refrigerant pumps
- Thread starter Gray Wolf
- Start date
Dave at Haskel
Active member
SquattingBull
Member
Very nice, very clean looking, and thank you for sharing!!. Anyone see old IFE throw up a picture of some parts and talk about how they are modding there haskel out for two stage with "only one valve"? The lab parter thinks they must just be excluding check valves in that statement and I tend to agree unless someone can think of another way. I feel like they have a lurker on here but just never made themselves known maybe he could answer ha.
Dave posted Haskel's design to use one two way valve and check valves earlier in this thread.
SquattingBull
Member
Indeed that was the check valve usage that I was referencing and what we believed they were doing hence the lurker comment ha.
Hey Tstar,
I really like the way you moded your Haskel and I'd like to use the same method. My team in Tabernash, CO is currently building out a lab with an MKIV and Haskel set up similar to yours. Based on Perma and GW's reports you can make the Haskel work for our application without the mod if using the proper heat exchange equipment. I'm going to try that first, but I wanted to have the equipment for the mod ready to order if I find that I need it. I tried to put together a parts list based on your photo and I was hoping you'd be willing to confirm/correct my list as well as hook me up with your source for the bent bar you used for the crossover piece.
1/2" 3-way valve (2x)
1/2" F NPT Coupling (2x)
1/2" x 3"(?) NPT Nipple
1/2" NPT Hex Nipple (2x)
Crossover arm 1/2" x (?) w/ bends and NPT F Swivel ends
Thanks,
GH
waywardwolf
Member
Hi everyone, I'm the Regional Manager from Haskel and, as you may have guessed, my name is Dave. I'm excited to be here and I want to thank Gray Wolf for telling me about this site and introducing me!
I'm excited to announce that we are just about ready to go with a new pump designed specifically for this industry. The pump that everyone has been using is the 59025, which has worked very well, however (I'm going to try not to get too technical as I describe this) it is a two-stage pump, which means the butane is pumped twice. In my observations and meetings, I have found that in butane extraction, the butane needs to be pumped from about 50 psi to about 150 psi. That pressure boost does not require two stages, our new pump will look very similar to the 59025, but since it is only handling the gas once, both chambers can be used to almost double the throughput of the pump. Additionally, all of the connections are being changed to stainless steel and there will be a connection to vent off any butane that leaks across the main seal. Of course the new pump will also have viton seals in the gas section.
The new model of this pump will be: EXT420
EXT is for extraction, the 4 indicates that the pump has a ratio of 4:1 and the 20 is the displacement of the pump per stroke in cubic inches (any other meaning of the model number is just a coincidence......)
Please feel free to post any questions or comments. I look forward to participating in this forum!
Dave
Hello Dave, I need to talk to you about a couple issues & I don't have your contact info? Will you please email me a phone number to wolfwurx1@gmail.
Thanks,
The check valves are 3/8" female
(2x) 3/8" fNPT 3-way T-type valves
(2x) 3/8" x 3" NPT nipple (this may vary as not all valves and fittings will be the same length)
(2x) 3/8" NPT Hex Nipple
(2x) 3/8" fNPT Coupling
Crossover arm
(2x) 3/8" mNPT to 1/2" JIC adapter
The 1/2" stainless tube we bent and flared ourselves but most specialty hose and fitting shops can mail you one. Just be detailed in your measurements and communication. braided PTFE tubing will work fine and the ball valves will still be rigid which is nice.
The Haskel does a good job single stage recovering butane in our systems, but we need the double stage capability to recover the butane from the water trap and heat exchangers, when we service the mol sieve.
We are running a tri core heat exchanger with dry ice or N2, so tank pressure stays under 20 psi.
Tstar,
Thanks for the corrections there. So all the NPT stuff is 3/8" and it only sizes up to 1/2" at the JIC connections. That makes sense. I'm impressed that you bent and flared the bar yourself! very cool!
GH
My freezer filled with glycol and ice with 4 individual 50' 3/8 coils(2 pre and 2 post coolers) also keeps my tank pressure at 20psi or less.
If only i could raise the freezer up and use gravity coils instead of immersion type. Recovery times would be faster no doubt.A6,My freezer filled with glycol and ice with 4 individual 50' 3/8 coils(2 pre and 2 post coolers) also keeps my tank pressure at 20psi or less.
What model freezer do you use for this? and you just fill the freezer with the glycol/water mix and put the coils directly in there? I think this idea is really cool. What percent volume of glycol to water do you use?
Thanks
GH
My freezer filled with glycol and ice with 4 individual 50' 3/8 coils(2 pre and 2 post coolers) also keeps my tank pressure at 20psi or less.
Hee, hee, hee, good job!
Siskayou Sam had his freezers higher and used gravity feed to siphon coolant to his storage tank barrel, and a pump to pump it back up to the freezer.
You might put your heat exchangers in an elevated pot, so they were self draining, with a pump to supply the pot with coolant from the freezers, and a gravity drain to return the coolant. Controlled by a float switch.
Dave at Haskel
Active member
Looks great! Thanks for sharing.
The first production versions of the EXT420-2 have finally been built. I should have photo's up in the next day or so.
Thanks!
Dave
Looks nice...now the fun begins!
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question for sam the skunkman on the original haze
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