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Originally Posted by Nitroxextreme
couldn't you use a needle valve with a servo to control the flow rate and their for control the length but limiting air going to it
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Perhaps...but the flow control valves we have had in the past (and the ones this year look the same) have needed to go through like 5-10 rotations (screwed in/out) to go from full open to full close....
Granted you could hack the servo...or gear it up...but you would probably lose the high resolution that I'm guessing the was the draw to using a servo in the first place...
Hope this helps
-Bill