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Haskel pneumatic refrigerant pumps
- Thread starter Gray Wolf
- Start date
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Hey FE, I know you got something good in all those zeros.....that's all I'm seein......?
Good linking up bro! Much love
Good linking up bro! Much love
Not sure what happened to his posts.. I could see them a couple minutes ago.
Here is the link he shared.
http://www.hii-pumps.com/pdf/LP500D.pdf
The other two posts were just information off this site.
GH
moved it to the search for a proper recovery pump thread as not to clutter up the haskel thread with other pump info. I found the proper model and spoke with an engineer over the phone. They have one for us thatll pull down to -24hg and they can replace the any of the Al internals with 316SS it seems it will work...
https://www.icmag.com/ic/showthread.php?t=282531
https://www.icmag.com/ic/showthread.php?t=282531
What parts of the Haskel 59025 would need to be replaced to make it safe for our application? A wet parts list... Is it possible I could machine the needed parts myself with a CNC machine to do an upgrade?
The Haskel 59025 is safe for our operation as is.
The changes under discussion are to switch back and forth between single and double stage, for speed and performance.
Our biggest dilemma with it, is how much air it uses, because of the 4:1 piston ratios. If we have 100 psi available, a 2:1 would be more than adequate and would take half as much air.
Perhaps you could sleeve the main cylinder and reduce the piston size for one off solutions.
Dave at Haskel
Active member
Gray Wolf is correct, many people are using the 59025 for extraction. The only material change we made on the EXT420 over the 59025 is that we changed the connection fittings to stainless steel on the EXT420. On the 59025 the connection fittings are plated steel.
Dave
Which one could easily replace with stainless correct?
Dave at Haskel
Active member
Yes, that is correct. The fittings are standard "off-the-shelf" fittings and they are external (they are the fittings that connect the interstage tube to the pump 1st stage outlet and 2nd stage inlet).
Dave
berad4guvna
New member
This awesome! Thank you Grey Wolf for making the connection!
Peace
Peace
Dave at Haskel
Active member
It's been a little while since we've had any activity here. I met Permacultuure last week, its always great to put a face to the screen name! I wanted to chat with you a little bit more, but I lost track of you.
I do have some news, Haskel's Engineering Dept just released a new version of the EXT420 pump. This pump will have the valving that we have been discussing built right into it, allowing the operator to switch between the single stage (high flow, relatively low pressure boost) and two stage (lower flow, but vacuum capabilities). The model number for the new pump will be: EXT420-2-87992
Let me know if you have any questions!
Dave
I do have some news, Haskel's Engineering Dept just released a new version of the EXT420 pump. This pump will have the valving that we have been discussing built right into it, allowing the operator to switch between the single stage (high flow, relatively low pressure boost) and two stage (lower flow, but vacuum capabilities). The model number for the new pump will be: EXT420-2-87992
Let me know if you have any questions!
Dave
That's great news Dave! It was a pleasure to meet you as well.
I was tagging along with a friend up there that day who had just won the Amsterdam cup with their machine. Personally I am not a fan of that company, and after hearing how much misinformation was being dispersed we had to leave. Not so discretely
That pump looks like it'll be the bee knees! I look forward to talking more in the near future. Thanks for you help and support!
Dave,
Great news! Do you have engineering data on how low of a vacuum this will pull? Also, when will these be available to order?
As an aside, someone mentioned early in this thread about the possible use of a pressure activated switch to make the pump automatically change stages when the collection basin dropped into negative pressures. Do you think something like this is possible?
Thanks for all your help dave!
Dave at Haskel
Active member
The new pump should be able to pull down to 24" Hg and maybe even a little lower. The pumps can be ordered now, but we haven't built any yet; I think it will be about 8 weeks before we are able to start shipping.
Regarding an automated pump, something like that would be possible, but I see two problems: It would be very expensive for us to produce (PLC, pressure transducers, pneumatically or electrically operated ball valve, etc) - I'm afraid it would make a 3 phase screw compressor look cheap. The other challenge with something like this is, at least in my observations, everyone wants to do the extraction process "their way", which produces what they consider to be "the best" product. If the system is automated, it will make it difficult for everyone to do it their way.
Dave
Dave at Haskel
Active member
One thing I want to point out is that the standard EXT420 will pull a vacuum down as low as the new pump, however, because it is a single stage pump, it can only develop an discharge pressure of about 20 psig (when drawing down to 24" Hg).
Dave
Dave
Great news Dave! Say had a question about the Haskle line of pumps in general. If I was just trying to transfer vapor gas from large pressure vessels through a series of filters, to fill up smaller pressure vessels, such as LP5 tanks, would the 59025 be the best choice? And just to I understand correct, since it has a 4:1 ratio, if I give it 100psi inlet air pressure, it should give me 400psi outlet pressure?
Thanks again Dave, you guys rock!!!
Lu lu lu lu lu lu lu lu lu lu lu lu lu, awhooooooooooooooooooo!!!!
Thanks Haskel, and Dave for paying attention!
On that same note, if I'm trying to figure out the flow rate of the 59025. On your website it says 10 cu.in. per cycle ... is that when the pump is operating with 100 psi inlet pressure? Or am I way off base?
Thanks again!
iirc scfm determines cycle rate and psi determines the limits of inlet/outlet psi.
