Quote:
Originally Posted by zsc100
......... However it IS OK to: mechanically hold back a 3ft long pneumatic cylinder at 50% extended, pressurize one side of it with 60psi, then let go mechanically; that is far more dangerous than just letting us have enough flow to punch the 2014 game ball.
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I wouldn't risk designing around a manual valve without asking on the Q&A.
I would consider a cylinder in your case safer than a mechanical spring doing the same function. Air can easily be bled to disarm it, a spring mechanism is armed once latched.