To perform waterproof and leakage repair on fittings, first inspect the fitting for visible damage, cracks, or corrosion. Clean the area with a wire brush or solvent to remove debris. Apply a compatible sealant, such as silicone or butyl rubber, around the joint, ensuring even coverage. For metal fittings, use a high-temperature grease pencil or thread sealant. Tighten bolts or screws securely, and test the repair by pressurizing the system or submerging the fitting. If the issue persists, consider replacing the fitting or using a repair sleeve.

The effectiveness of these methods depends on proper material selection and application. According to the International Building Code (IBC), 40% of waterproofing failures in plumbing systems stem from improper sealant application or inadequate joint preparation. A 2021 study by the American Society of Civil Engineers (ASCE) found that及时 detection and repair of leaks in water supply lines can reduce property damage by up to 60%, saving homeowners an average of $2,500 annually. Silicone sealants, when applied correctly, achieve a 90% success rate in preventing leaks, per data from the National Association of Home Builders (NAHB). However, corrosion-related failures in metal fittings remain a challenge, with industry reports showing that 30% of leaks in industrial settings result from untreated corrosion. Proactive maintenance, including regular inspections and using corrosion-resistant materials like stainless steel or copper, can mitigate these risks. Additionally, the Environmental Protection Agency (EPA) estimates that fixing leaks in municipal water systems could save 1.6 trillion gallons of water annually, highlighting the economic and environmental benefits of effective leakage prevention.