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Sandblasting

Captain B Join Date: Feb 2002 Posts: 53 West central New Hampshire

2002-11-04          44598

I just finished sandblasting a set of forks I found in a bone yard. I was blowing a lot of moisture out of the gun even though I have a water trap on the line and the humidity has been low. I purge the moisture trap each time I set up for work. I can't figure out the source of the water. Any ideas? How do I fix this--add a second moisture trap?

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Sandblasting

zcases Join Date: Jul 2003 Posts: 13 Whitney Point, NY

2002-11-04          44615

Captain B - your problem is most likely condensation of moisture in the line as it cools off. The warm air heated by compression travelling through your air line (on a cool concrete floor?)will condense air even after going through a trap. One trick is to fixture a can of ice water around the bowl of your moisture trap, wait till you see the moisture it collects now! Do anything you can to cool off the air, and hose, BEFORE the trap. Hope this is of some help. ....

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Sandblasting

mainiak1 Join Date: Jul 2003 Posts: 22 Maine

2002-11-06          44680

Captain B

I had the same problem. Try moving the water trap as close
as possible to the end of hose. Right before sand blaster.

Hope this helps,
Norm ....

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Sandblasting

Ken Butner Join Date: Posts: 1

2002-11-12          44905

I have a bead blast cabinet and have battled the same issue with water in the air line. The problem is that the heated air contains a lot of water VAPOR. A water seperator will NOT remove vapor. The vapor must condense to a liquid state for a trap to catch it. I fixed my problems by installing black iron pipe in my shop and getting some distance between the regulator and the compressor. The black iron pipe acts as a heat sink and cools the air so the vapor will condense. Then you can remove the water. I am attaching a link of the diagram I used in my shop. Its important to install the risers on the air stub down off the main line as well as install some drain valves. This was a major project, but it fixed my problems and was a LOT cheaper than buying an air dryer. ....


Link:   Airline Piping Diagram

 
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Sandblasting

Captain B Join Date: Feb 2002 Posts: 53 West central New Hampshire

2002-11-12          44925

Ken--I tried to view the website. It flashed Adobe Acrobat and then opened to a blank page. Is that the right link? On a related issue now that I know I dealing with seasoned pros on this thread. I want to keep my pressurized reservoir full all the time and drain water from the bottom occasionally to avoid rust without having to bend down and open the valve. I've heard of rigging a foot activated pressure relief valve so that you can blow out the tank without draining it of all air. I've looked in catalogues but haven't seen an off the shelf rig. Has anyone custom crafted this kind of hook up? ....

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Sandblasting

Ken Butner Join Date: Posts: 1

2002-11-13          44951

Captain B, I am not sure why the link would not open, it works from my pc. Here is the link, I will paste it in the message, maybe that will help.

http://www.tptools.com/statictext/piping_diagram.pdf

I have never seen a foot activated drain for the compressor tank. My compressor is mounted on a slab outside of my shop. I removed the small drain valve in the bottom the tank. It was a pain to get open and drain the tank of water. I bought a few pipe nipples, elbow and a quarter turn valve and extended it out from under the tank. Now I can easily reach down, open the quarter turn valve, blow off the water and close it back. Its amazing how quickly water collects in the tank. I drain it after every heavy use.

Hope this makes sense. Let me know if you can not open the link. My email is listed with my post. If you still can not open it I will save the pdf diagram as a jpg picture and email it to you. -Ken ....

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Sandblasting

JimFFF Join Date: Jul 2003 Posts: 8

2002-11-17          45057

Check this out. It may be a solution to the problem. This appears to be a fairly new product as the website for the filter is still under construction.

http://www.wixfilters.com/news/article.asp?NewsID=1123
and
http://www.aquachekfilters.com ....

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