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planet valves are key safety safeguards for pressure pipelines and pressure vessels. To ensure the normal operation of safety valves and extend their service life, regular inspections should be conducted during operation to check for abnormalities such as leakage, jamming, and spring corrosion. Observe whether the lock nuts of the adjusting screw sleeve and the set screws of the adjusting ring are loose. If any issues are found, take appropriate maintenance measures promptly. Safety valves should also be periodically removed for comprehensive cleaning, inspection, regrinding, and recalibration before being put back into use. Safety valves installed outdoors