So we're setting up our air distribution using 1/2" polyurethane tubing and push fittings- the stuff is super easy to work and re-work btw.

I wanted to put a few in line shut-off valves in strategic places so I could work on the system, or shut part down without having to take everything down, but I'm looking at my 1/2" push valves and I see they reduce to less than 1/4" at the ball. I'm not a genius, that is a pretty drastic restriction imo.

Even though my distribution is set up in a loop- with 2 directions for air to flow for maximum volume I'm thinking these valves are really killing the whole reason for having 1/2" line in the first place- or am I wrong? Advise?

Thanks -Rob