[EricLeifermann]

Originally Posted by ToddF

It violates R77.B:
"The only pneumatic system items permitted on 2014 FRC ROBOTS include the items listed below. ...
B: Pneumatic pressure vent plug valves functionally equivalent to those provided in the KOP."

A momentary push button electrical switch is not functionally equivalent to a toggle switch, which must be actuated in both directions.

A spring-loaded single-acting pneumatic cylinder is not functionally equivalent to a double acting pneumatic cylinder, as it returns to its retracted position without actuation.

A spring loaded push button pneumatic valve is not functionally equivalent to a rotational ball valve, which must be actuated in both directions. For the purposes of a dump valve in a FIRST robot, the functionality of being spring loaded makes it better than a ball valve. If it were functionally equivalent, there would be no reason to use it. (Other than cost and availability.) From an air flow perspective, they may flow the same, just as electricity doesn't care whether it is switched by flipping a switch or pushing a button. But, to the operator, they are very different.

Do they both not serve the same function? They both allow and prevent the release of air pressure.