Quote:
Originally Posted by Sparky3D
Actually, the Q&A already dealt with the alternate uses of manual valves (Q235). You are only allowed one, and it can only be used to vent pressure for the system.
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Answer of Q235
"No. Per R89 only one pressure vent plug valve may be used on the ROBOT which,
when manually actuated, must vent to the atmosphere to
relieve all stored pressure."
Bolded for my emphasis, doesn't state that the valve must be manually actuated to prevent air from being relieved. Though this question was asked about a different topic, its answer allows for spring actuated relief valves.