What should you do if a pressure-relief valve is still malfunctioning after attempting pressure setting adjustments?

When dealing with a malfunctioning pressure-relief valve that does not respond to pressure setting adjustments, replacing the valve is a logical and appropriate course of action. Pressure-relief valves are critical components in maintaining system safety and integrity, and if they fail to operate correctly after adjustments, it indicates a potential internal failure or wear that cannot be rectified through simple adjustments.

The integrity and reliability of the pressure-relief valve are paramount, as failure to operate could result in overpressure situations that might lead to dangerous conditions. Therefore, removing the defective valve and replacing it with a new or properly functioning one ensures that the system remains operational and safe.

Other options, like using a different pressure gauge, do not address the root cause of the malfunction if the valve remains problematic after adjustments. Sending it back to the manufacturer or to a precision measurements equipment laboratory could be considered in some contexts, especially for in-depth analysis or repairs. However, these actions may prolong the downtime of the system and do not provide an immediate solution. In high-demand environments where safety is critical, replacing the valve ensures minimal disruption and guarantees that system pressures can be controlled effectively.