[SEL] air lines in shop?

[Peter Lowe]

There are typical designs for shop air supplies, depends how technical you 
want to go.
http://www.ch601.org/tools/Neil/pipe-layout-1.pdf
If it is for blow down only then straight compressed air is fine, if you 
want to paint and need dry air then you need good filters and water traps. 
If you are really rich you can add a refrigerant dryer.
It can get very humid where I live and that can be a problem when spray 
painting, I use an automatic blow-down water trap that sometimes works 
overtime.

I have used polyurethane tubing for over 30 years in heavy industry in 
Industrial Instrumentation and have run 1000's of kilometres of the stuff, 
never had a blow-out using the black UV stabilized stuff. The coloured and 
clear does not like the sun too much. Polyurethane good for 115 psi or if 
you want higher pressures go to Nylon for 225 psi, but it is not as 
flexible.
I use SMC Pneumatics, an international company.
SMC use "One Touch" Fittings, look here and at the left hand menu:
http://www.smcpneumatics.com/products/fittings/instantfittings/index.php

I am an Electgrical contractor and Industrial Instrument Technician (Flow, 
Pressure, Level and Temp controls), the latter has been my main trade for 
over 30 years. I would not be bothered cutting and screwing gal or black 
pipe or even copper when this tubing is available. I would say used in all 
industries in Australia.
My $0.02 worth and experience.

Regards
Peter Lowe
R&V Engine Registrar
Australia
http://www.oldengine.org/members/plowe/rv-engines/rvpage.htm
Skype name: ozengines