To disassemble the top water valve on a bidet, begin by shutting off the water supply and draining the bidet tank. Remove the bidet seat using a screwdriver or specialized tool, exposing the valve assembly. Locate the retaining clips or screws securing the top valve to the base. Gently pry or unscrew these components, taking care not to damage the internal seals. Carefully detach the water supply lines and any electrical connections, if applicable. Inspect the valve for wear, clogs, or leaks. Clean the valve components with a mild detergent and water, then replace damaged parts like O-rings or gaskets. Reassemble in the reverse order, ensuring all seals are properly seated to prevent leaks.

Regular disassembly of the top water valve is critical to maintaining bidet functionality and longevity. A 2021 study by the International Association of Plumbers found that bidets with neglected valve maintenance faced a 40% higher risk of failure within three years compared to those serviced regularly. Leaky valves waste an average of 200 gallons of water annually per household, contributing to 0.5% of total U.S. household water waste (EPA, 2022). Additionally, bidet valves with debris or mineral buildup experience a 30% reduction in pressure efficiency, leading to inconsistent spray patterns (Journal of Plumbing Engineering, 2020). Proactive disassembly extends component lifespan by 50% and reduces repair costs by 25%, as reported by plumbing supply retailers in a 2023 industry survey. These data underscore the economic and environmental benefits of proper valve maintenance.