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Tool Talk Discussion Forum

Air Compressor Water Seperator

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Tim

03-01-2004 07:28:53




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I bought an inline water seperator for my air compressor last weeked and was wondering if anyone know how they work?

I took a look inside and it appears to have a baffle and some sort of plastic filter. Does anyone know what this plastic is?

Regards, Tim




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Ray,IN

03-01-2004 19:17:22




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 Re: Air Compressor Water Seperator in reply to Tim, 03-01-2004 07:28:53  
Have you read the article on this subject? Look in the "articles" section on the home page. It will answer most of your questions.



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jdemaris

03-01-2004 18:34:42




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 Re: Air Compressor Water Seperator in reply to Tim, 03-01-2004 07:28:53  
I tried several different types of in-line driers, but none kept all the water out. My main problem was spray painting in hot humid weather. I kept getting drops of water in the paint. It seems that once the water is vaporized, it gets through the filters. I was in a pro-painting shop and they had a special refrigerated air drier, and it worked real nice. I'm too cheap to buy one, though. I don't do that much paiting. In fact, on small jobs, it usually isn't a problem. I recently painted a Chevy Suburban though, and when I was halfway done, the water drops started coming through the gun.

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Joe Evans

03-01-2004 19:27:53




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 Re: Re: Air Compressor Water Seperator in reply to jdemaris, 03-01-2004 18:34:42  
If you can buddy up to a mechanical contractor or an electrical contractor, more often than not they demo out good, usable refrigerated air dryers from construction projects. Older HVAC systems are controlled by pneumatics. For system dependability dry air is a requirement. New HVAC systems are generally DDC controlled--the air supply is no longer needed. Check them out. You can probably get one for nothing.

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Mac

03-01-2004 10:15:28




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 Re: Air Compressor Water Seperator in reply to Tim, 03-01-2004 07:28:53  
We used them years ago on our pneumatic equipment and they work good, but you will need to check them once in a while and keep them clean.



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Mark

03-01-2004 09:35:36




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 Re: Air Compressor Water Seperator in reply to Tim, 03-01-2004 07:28:53  
The plastic dudes are centrifugal force. Air has very low mass and water doesn't. When the air enters the chamber, it is forced to spin out towards the wall. The water hits the wall and slides down into the sump The air being lighter goes out the exhause port. When the sump is visably partly full, push the vent plug on the bottom and the process repeats....Nice no maintenance way to eliminate water.

Mark

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John

03-01-2004 15:45:43




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 Re: Re: Air Compressor Water Seperator in reply to Mark, 03-01-2004 09:35:36  
Often those types of driers don't work to well if you mount them right on the tank. the water does not want to seperate from the hot air. you have to cool it first. a good way to do this is to buy 25 feet of coiled copper tubing. mount this between the compressor and the drier



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tim

03-01-2004 16:46:54




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 Re: Re: Re: Air Compressor Water Seperator in reply to John, 03-01-2004 15:45:43  
John,

Thanks for the tip. I was going to mount it right on the output of the tank, but now I think I will put it on the input to my hose reel which is about 20 feet away from the tank.

Tim



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RP

03-01-2004 19:05:53




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 Re: Re: Re: Re: Air Compressor Water Seperator in reply to tim, 03-01-2004 16:46:54  
Also, put it before the pressure regulator. Compressed air holds less water at higher pressure. If you get most of it out at 120psi, the rest will likely stay vaporized after its regulated down to 85psi and not form droplets.



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Dan

03-03-2004 07:55:22




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 Re: Re: Re: Re: Re: Air Compressor Water Seperator in reply to RP, 03-01-2004 19:05:53  
I have made dryers from copper tubing and they work pretty good. Put together about 8 to 10 tee's horizontaly, tee's facing up, put 12 to 16 inch pieces of tube into tee's. tie them all together with tee's across the top. I size this to the fan/flywheel guard on the compressor. mount this setup with rubber to the guard. Inlet on the bottom so water can run back into the tank. This slows air flow and cools it condensing the water. You can also buy this type of unit with fins on it like a high preasure radiator. If you build one the tubing and your sweat job must be able to handle the air preasure. Good luck

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