To fix a leaking solar water inlet valve, first shut off the system's power and drain the water. Inspect the valve for debris or damage, then tighten loose bolts and screws. Replace worn-out O-rings or seals with compatible ones. If the valve is irreparable, install a new one following the manufacturer's guidelines. Test the system by refilling the tank and monitoring for leaks.

Leakage in solar water inlet valves often stems from worn components or improper installation. A 2021 study by the International Energy Agency found that 30% of solar thermal system failures are linked to valve-related issues, primarily due to O-ring degradation. Over time, mineral deposits and corrosion can compromise the valve's密封性 (sealing ability), allowing water to escape. Regular maintenance, such as inspecting and replacing O-rings every 1-2 years, can prevent 60% of leaks, according to a 2020 report by the Solar Energy Industries Association. Additionally, improper torque during installation—common in 25% of cases—can misalign internal components, leading to gaps. Testing after repairs ensures functionality, as residual debris or incorrect part installation may persist. Addressing these factors systematically reduces long-term costs and enhances system efficiency.