im looking in catalog page 913 of mc-master and i was wondering which qev would be best. my barrel is sleeved in .5" copper pipe, and i was thinking most about the right-angle valves (6646K) on that page.
i dont quite understand why there is 3 measurements (inlet, outlet, exhaust); is this because air can pass through from the inlet to the outlet freely, and the exhaust just vents the air from the center?
also, how are they actuated? maybe air can only pass from the inlet to the outlet when the exhaust is open the the atmosphere (like the blowgun on a modded sprinkler valve?
does anyone else know what kind of store i can buy these at in person (in america)? i tried home depot, lowes, and paintball/sporting goods but no luck.
thanks a bunch!!!