[AT] Was: Lapping Air Compressor Valves

[charlie hill]

I don't know what is wrong with steel pipe.

Charlie
----- Original Message ----- 
From: "Sheppard, Charles E" <sheppard at indiana.edu>
To: <at at lists.antique-tractor.com>
Sent: Saturday, July 30, 2005 10:33 PM
Subject: [AT] Was: Lapping Air Compressor Valves


> Well, I followed Pete's suggestions on lapping the disc-type valves in the 
> old Westinghouse air compressor.  I lapped on a piece of 1/4" plate glass 
> I cemented with shellac to a thick piece of MDF.  The smaller valves 
> weren't too bad but the larger valves on the LP cylinder took some time. 
> The heat was too much for me last week so I finished it up today.  After a 
> little work on the oil pressure unloader (bypasses HP to LP) I put it all 
> back together.  I rolled it over and , just like you said Pete, it has a 
> nice groan to it.  And it runs like a champ...I'm very pleased.  Thanks 
> for the help, Pete.
>
> Now I need to work on air distribution and I definitely do not want steel 
> pipe.  Copper is pretty pricey so I'm thinking plastic.  I know this was a 
> discussion topic a few years ago, or so, but what is the veredict on the 
> flexible polyethelene, 160lb.stuff?  Maybe I would use copper on the drops 
> to the connection ports.  I would like to run air to several places and, 
> counting all the zigs and zags, it will be a little over 100'.  Any 
> thoughts?
>
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