[AT] Pressure drop?

[rlgoss at insightbb.com]

It's going to depend on the flow rate, Farmer.  If it's just a pressurized line, there is no pressure drop.  But if you want it to deliver 9 CFM at 90 PSI, you may have trouble.  I don't have the formula with me for doing the calculation, but it shouldn't be difficult to find.  Try searching for "line loss."

Larry


----- Original Message -----
From: Francis Robinson <robinson at svs.net>
Date: Tuesday, January 29, 2008 20:57
Subject: [AT] Pressure drop?
To: Antique tractor email discussion group <at at lists.antique-tractor.com>

> OK, who knows compressed air pressure drop off of the top of 
> your head? 
> :-)
> I am going to run a compressed air line from one shop to the 
> other. It 
> will run inside of an underground conduit in 1/2" PEX tubing. It 
> will 
> basically have one fitting (full 1/2") at each end of the run. 
> The run will 
> be 250' long with no fittings at all in the line itself. If I 
> have 125 PSI 
> at one end what kind of drop can I expect at the other end? What 
> would it 
> be at 800'?
> BTW, PEX is rated and recommended for compressed air. I was 
> reading the 
> print on the pipe today and for water what I have on hand at the 
> moment is 
> rated at 100 PSI at 180 degrees F. It will not get hard and 
> brittle and it 
> will not shatter on impact. It is cross linked polyethylene and 
> is not 
> affected by oil.
> I am really in love with this stuff for water plumbing.
> 
> 
> 
> 
> 
> --
> "farmer"
> 
> 
> Francis Robinson
> Central Indiana, USA
> Robinson at svs.net
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