[AT] Air Lines

[charlie hill]

Hi Myron,

I think that pop off valve is in addition to one that is built in on the 
tank/compressor.  At least I hope that  is the case.  Other wise I agree 
with you on that point.  As for the 8" risers, the main piping system after 
it passes the pop off valve flows slightly down hill so that all the 
condensate flows to the drain valve at the end of the building.  The risers 
are to make sure none of that water blows up into the lines feeding 
equipment.  I don't know that 8" is necessary but I'd be willing to bet TP 
had a reason for that length.

I'm not being critical of anyone's set up.  Do it however it works for you 
in your shop.  PVC, copper, rubber hose.  If it works do it but given the 
money, the time and a nice shop I like this design a lot.

We sandblast structural steel, tanks, boat hulls, sewer plants, etc. We 
typically use diesel compressors of at least 375 CFM output.
Rubber hose is about the only way we can run our outfit because it has to be 
very portable.  The air from the compressor is very hot.  Moisture is a 
constant problem, especially this time of year.  Our  moisture seperators 
always have the drain valve cracked open to let the water drain out. 
Sometimes it's a pretty good flow.  Even at that we often have problems with 
moisture stopping up the sand pots.  I have seen days when we had to stop 
blasting because the sand turned to mud and was sticking to the steel.

Charlie
----- Original Message ----- 
From: "OldIron" <oldiron at charter.net>
To: "'Antique tractor email discussion group'" 
<at at lists.antique-tractor.com>
Sent: Sunday, July 31, 2005 5:49 PM
Subject: RE: [AT] Air Lines


>
> I wouldn't put the safety valve after the ball valve on the tank. If the 
> safety valve
> pops, just shut off the tank ball valve and the safety valve will quit. 
> But then the air
> tank might strike the shuttle in space. :-)
>
> Most regulators have a water trap built into it. Air coming out of the top 
> of the main
> line is Ok, those 8" risers are not needed before the filter regulators. 
> If more than
> one device is used at a time make the header larger in size, preventing 
> air pressure
> drop in the main line and drop lines.
>
> Myron in Minnesota.
>
>
>> -----Original Message-----
>> From: at-bounces at lists.antique-tractor.com 
>> [mailto:at-bounces at lists.antique-
>> tractor.com] On Behalf Of charlie hill
>> Sent: Sunday, July 31, 2005 2:23 PM
>> To: Antique tractor email discussion group
>> Subject: Re: [AT] Air Lines
>>
>> Might look like over kill to you Larry but it is dead on right and  the 
>> way
>> you will see it done in most any industrial shop or plant or in a top 
>> notch
>> paint shop.  I count three unions but they can be added anywhere  you 
>> would
>> like to add them.  The over kill is to let the water condense out of the 
>> air
>> and run to a drain rather than to your tools, blast cabinets or paint 
>> guns.
>>
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