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More Home-made moisture trap..............

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Mike

05-25-2004 17:41:37




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I really need a moisture trap to get rid of the moisture when I use my sandblaster and spray gun. I was going to use the 2" pipe trap that Rusty suggested in an earlier post. While looking thru my treasures (junk), I found a aluminum 50# CO2 bottle. This bottle is about 4 1/2 feet tall and about 8" or 9" in diameter. I am thinking about turning it upside down so the valve would be on the bottom (drain). Drilling and tapping the top end for an outlet, and putting a inlet about the center. Any thoughts on this idea? Would it work? Thanks..... ..

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Butch

05-26-2004 06:12:44




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 Re: More Home-made moisture trap.............. in reply to Mike, 05-25-2004 17:41:37  
When using high volumes of air as in sand blasting it is my experience that no simple water trap is entirely effective especially when the humidity is high. I also found that a trap is not effective when mounted on or too near the compressor. Problem is that the air will not release the water when it is warm and when you work the compressor hard the tank and air inside gets very warm. A few things will make any water trap more effective. 1. A large volume in the trap that slows the speed of the air flowing through it. 2. Locating the trap as far away from the compressor as you can helps the water condense. 3. In cases of hard usage and very high humidity it helps a lot to coil 50 or 100' of hose in a drum filled with cool water, a home made condenser coil. Follow that with the trap. The CO2 bottle should work but I am leery of such because any defect in the container could make for a nice little bomb. In my shop, which is 26X60, the air compressor sits in a corner and I have steel line running all the way around with hookups. The steel line serves as a very good condenser. When painting I put the trap at the far end of the pipe and run a hose back to the booth. When blasting I use the hose in the drum as I use a big compressor for that. None of this removes 100% of the water on very warm, humid days, I just take a break from work on those days.

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Mike

05-26-2004 17:30:36




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 Re: Re: More Home-made moisture trap.............. in reply to Butch, 05-26-2004 06:12:44  
I went ahead and made a water trap out of the aluminum CO2 tank. That sucker had at least a 1/2" wall thickness. I turned the bottom up, putting the valve on bottom. I drilled and tapped two 1/4" holes for inlet and outlet. Inlet is 6" from bottom, outlet is 6" from top. I hung the tank on the wall and connected it to the compressor. I turned the compressor on and went somewhere else. After eating lunch and hearing no loud noise, I re-entered the shop to find both tanks at 135 psi. I sand blasted for about 2 hours with no sign of any moisture in the lines. I open the bottom valve and about a cup of water came out. I am very happy with the way this worked.

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Butch

05-26-2004 17:36:59




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 Re: Re: Re: More Home-made moisture trap.......... in reply to Mike, 05-26-2004 17:30:36  
lol, going somewhere else for a while was a smart precaution. I hate sounding like a darned lawyer but a person never knows what the posters fabrication skill levels are.



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