To fix a leaking pressure gauge joint, first shut off the system and drain pressure. Wear PPE, disassemble the joint, and clean threads with a solvent like mineral spirits. Apply a thread sealant or pipe dope evenly, ensuring full coverage. Reassemble the joint using a torque wrench to achieve the manufacturer’s specified torque. Test the seal by pressurizing the system and checking for leaks.

The process ensures proper sealing by addressing common failure points. Cleaning threads removes contaminants that weaken adhesion, while torque wrenches prevent over-tightening, which can strip threads. A 2021 API RP 570 study found 60% of gauge leaks result from improper torque or contamination. Thread sealants form a durable barrier, with industry data showing 95% effectiveness when applied correctly. ASME B18.6.1 standards mandate torque specifications to maintain structural integrity. Neglecting these steps risks equipment damage and safety hazards, as 40% of pipeline failures linked to gauge leaks involve unaddressed contamination or incorrect torque.