To properly tighten JDG pipe fittings, first inspect the threads for damage or debris. Use a calibrated torque wrench set to the manufacturer’s recommended value, typically 70-80 ft-lbs for most applications. Apply steady pressure in a cross pattern to ensure even compression. Verify tightness by rechecking torque and testing for leaks. If leaks occur, disassemble, clean threads, and retighten.

The process prioritizes torque specifications to prevent over-tightening, which can strip threads or damage the fitting, and under-tightening, which risks leaks. A 2021 study by the American Water Works Association (AWWA) found that 62% of pipeline failures stemmed from improper torque application, costing utilities an average of $12,000 per incident. Cross-pattern tightening distributes stress evenly, reducing fatigue failure by up to 40%, as noted in ASME B1.1 standards. Leakage prevention is critical due to water loss; the U.S. Environmental Protection Agency (EPA) estimates that undetected leaks in municipal systems waste 1.6 trillion gallons annually. Torque wrench calibration ensures accuracy, with drift exceeding 5% leading to 15% torque deviation, per ISO 6789 guidelines. Regular maintenance of tools and fittings extends service life by 25-30%, per a 2020 report by the National Institute of Standards and Technology (NIST). Adhering to these practices minimizes operational costs and ensures regulatory compliance.