I am wanting to use globe valves for throttling flow in a marine cooling system application instead of an orifice.

But once I adjust the globe valve to the proper position, I want to ensure it can be repositioned to this same height if it gets mistakenly turned. Or a lock to prevent rotation would be good.

Is there a globe valve out there with a lock or a scale on the stem that shows it's position?

A balancing valve(check with HVAC valve manufacturers) has that option plus you can check the flowrate by a manometer.

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