Date: Sat Apr 12 02:55:14 2008

Author: Chuck Patten

Subject: Re: air tracks and air sources

You might consider a condensate trap just following the compressor which
consists of roughly 25' to 35' of copper pipe arranged in a 'switchback
pattern' that incorporates a drainable sump pipe at the lower end and feed
the output to a oil/water separator as a minimum prior to routing to the
user distribution system. Drain each day/week or more often depending upon
the amount of water vapor in the air that is being compressed.


-----------------------------oxo--------user system
| | drain stopcock
note each length should angle
------------------------------------------------- downwards at
roughly 3/4" per yard
|---------------------------------------Compressor output
x drain stopcock

-----Original Message-----
From: [] On
Behalf Of Bernard Cleyet
Sent: Friday, April 11, 2008 1:14 PM
Subject: Re: [tap-l] air tracks and air sources

That's curious, as we never had a water prob., and it's rather wet being w/
in sight of the Great Pacific. Perhaps you do mean compressor? We use a
blower which is quite different from a compressor. I don't remember seeing
a dryer in the mechanical room either.

Perhaps, not incidentally the blower is lower than the air tracks.
the mechanical room is a few feet lower than the lab floor.


On 2008, Apr 11, , at 12:56, Thomas J. Bauer wrote:
> If you have lines that feed from the ceiling then each drop represents
> a place for water to collect. We had a in the water cooling jacket on
> the compressor which blew water into the entire system. When I turned
> on my airtrack it looked like a water sprinkler! We have a least a
> hundred air drops in our building that hang from the ceiling. Every
> one had to be opened to bleed out all the water. It took almost a year
> to get the water out of the system. Air lines should feed up from the
> floor not down from the ceiling. That was about twenty years ago and
> we haven't had a problem since.
> Also you might want to put a filter on the line into the airtrack.
> Ours
> have very small holes. Oil, grease, and dirt gets passed along into
> the track and plugs the holes.
> Tom Bauer
> Wellesley College
> writes:
>> Any time that you compress air and then release it, you are going to
>> have moisture. Anticipate it, embrace it, fix it and then build a
>> bridge and get over it ... If you put in a compressor system,
>> also include a dryer of some sort. If you have bucks to burn, people
>> have a way to help you do it.
>> If not, less expensive solutions are also available. Perform the
>> recommended maintenance and it will last!
>> cheers,
>> chuck...
>> -----Original Message-----
>> From: [mailto:tap-l-]
>> On Behalf Of Bill Norwood
>> Sent: Friday, April 11, 2008 11:13 AM
>> To:
>> Subject: Re: [tap-l] air tracks and air sources
>> Hi Taplers,
>> But, why worry later, when I could worry now:
>> I am wondering whether in-house systems might tend to develop
>> condensation, and, if so, how would such be prevented?
>> And, the prevalence of home-bound in-house vacuum-cleaning systems,
>> among those who can afford them, should tell us something, shouldn't
>> it?
>> I know, that's suck physics instead of blow physics, but that should
>> not make much difference - or am I wrong about this?
>> According to the students, and I have seen this written in many
>> places, physics actually sucks, so I do tend to be apprehensive about
>> a physics system that blows.
>> Thanks, and have a pleasant weekend,
>> Bill Norwood
>> U of MD, Physics at College Park