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Fridge/AC compressors

Post questions and info about pneumatic (compressed gas) powered cannons here. This includes discussion about valves, pipe types, compressors, alternate gas setups, and anything else relevant.
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Fridge/AC compressors

Unread postAuthor: Zeus » Sun Sep 05, 2010 8:08 pm

I can obtain quite a number of fridge & A/C compressors, so I have a few
questions about them.

1. Which is better
2. What do you recommend for fitting them off
3. Is it fesible to connect them in parallel for higher flow
4. Is there a more reliable brand

Thanks for reading my noobish questions.
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Unread postAuthor: BeaverRat » Sun Sep 05, 2010 10:44 pm

1. As far as I know, AC compressors have a higher cfm than most normal fridge compressors.

2. For fitting them, you can buy high pressure compression fittings from McmasterCarr.

3. ?

4. ?
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Unread postAuthor: c11man » Sun Sep 05, 2010 11:40 pm

1. the flow of the compressor depends way more on the size of the compressor than the type. i would rather have a recipricating compressor over the rotary one i use for the majority of my compressing becuase recipricating seem to have the deadspace as the limiting factor while my rotary is limited by power.

2. just use compression fittings from a hardware store. they are plenty good. and ive used them up to the max of my compressor

3. with only fridgies its not realy feasible to hook them up in series. it works quite well to use a shop compressor to feed the fridgy though.

4. with the torture we put compressors through compressors arent very reliable no matter the brand.
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Unread postAuthor: Zeus » Mon Sep 06, 2010 2:25 am

Thanks for the advice, though I was referring to connecting the compressors being connected in parallel as opposed to series for higher flow instead of higher pressure.

I can get compressors that are as big as a 10L bucket.
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Unread postAuthor: Crna Legija » Mon Sep 06, 2010 3:45 am

Both ways will increase flow, i do it with my compressor now, it used to take 2.5 min to fill a 1l FE to 300psi. now its like 30 seconds. i do have a small one tho
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Unread postAuthor: c11man » Mon Sep 06, 2010 11:51 am

Zeus wrote:Thanks for the advice, though I was referring to connecting the compressors being connected in parallel as opposed to series for higher flow instead of higher pressure.

I can get compressors that are as big as a 10L bucket.


parallel will of course give you more flow. the flow will be equal to the individual flow of each compressor added together.

so you can get compressors as big as mine?
<a href="http://s696.photobucket.com/albums/vv321/c11man/medium%20size%20fridgy/?action=view&current=100_0151.jpg" target="_blank"><img src="http://i696.photobucket.com/albums/vv321/c11man/medium%20size%20fridgy/100_0151.jpg" border="0" alt="Photobucket"></a>
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