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Finding a specific compressor
3

Finding a specific compressor

Finding a specific compressor

(OP)
For this particular project, we are looking to compress a certain gas from low pressure to at least 200-300PSI.  I'm not sure if one even exists, but we are looking for a compressor/vacuum pump capable of doing this.  Any ideas of where I can start looking?

Thanks

RE: Finding a specific compressor

If you wont say what it is can you at leas tell us if the gas is relatively inert?

Also, what kinds of volumes/rates are you looking at.

Given your handle does it need to be a 'clean' compressor as typically used for bio medical applications and the like we use some pumps from MEDO but I don't know what max PSI they hit.

Compressors exist that will take certain gases in certain situations well over the values you mention.

http://en.wikipedia.org/wiki/Gas_compressor

A quick google search turned up a bunch of air compressors that hit at least the 200 PSI level.

Posting guidelines FAQ731-376: Eng-Tips.com Forum Policies http://eng-tips.com/market.cfm? (probably not aimed specifically at you)
What is Engineering anyway: FAQ1088-1484: In layman terms, what is "engineering"?

RE: Finding a specific compressor

3
There are others on this site that are more tolerant of your "low pressure", "to at least", "a certain gas" BS, but I have lost patience.  If you want an Engineering answer then you need to provide Engineering Data.  The "certain gas" really angers me.  If you're not willing to disclose the gas species, then how would any of the helpful people on this site know if they need to consider corrosive gas, poisonous gas, or gas near a phase boundary (all have a definite impact on compressor selection).  Is your "low pressure" above or below atmospheric?  It kind of matters.

If this project is Oh So Confidential, then stop trying to get free Engineering and hire someone who can tell a compressor from a bicycle and have them sign an NDA.

David

RE: Finding a specific compressor

Nicely done zdas.  You are right that there seems to be a lot more posts lately that are vague requests from some people who need to do a bit of work before posting.  Along the lines of "I have a solution with components A and B how do I separate them, what do I need to buy, who can I call? Oh and it can't cost much."

RE: Finding a specific compressor


Don't beat about the bush Dave - just say it like it is...

H

www.tynevalleyplastics.co.uk

RE: Finding a specific compressor

Me, I'd recommend a vacuum pump, as the OP has mentioned.  The do a great job reaching 200-300 psi.

RE: Finding a specific compressor

(OP)
Sorry about my nonspecific question.  I suppose I have not adapted to the environment of this forum yet, and I was not trying to keep the specifics a secret.

The gas in question is definitely inert, Helium 3.

In the initial stage, it is kept at a lower pressure: 70psi


I'm trying to transfer the gas from a storage cylinder to a glass cell capable of handling pressures well over 10 atm.  Thus, it would be best if the flow rate for the compressor is as minimal as possible.

The problem I've run into is looking for the right compressor capable of handling this.  As for keeping the Helium clean during compression, an oiless compressor would be preferred.  

Again, sorry for the contents of my original post.  I was not trying to cause any sort of controversy.   

RE: Finding a specific compressor

Google "pressure amplifier".

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