The set point adjustment of the device shown in the illustration is made by rotating what component? GS-RA-14 Illustration GS-RA-14: the U.S. Coast Guard has not released this illustration.
Official USCG Answer & Rule Citation
Correct Answer: Option D — "2"
Component "2" is the primary spring compression adjustment nut or screw on pressure-regulating valves. Rotating this fastener directly alters spring tension against the diaphragm or bellows assembly, thereby changing the operating set point of the valve.
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