Efficient compatibility Designed for 3 inch flow valves, this valve replacement solves common flush valve problems with an optimal fit that ensures stable and reliable operation with every rinse and no leaks. Reduce utility costs Stops toilet leaks and restores full flushing performance, reducing water loss and saving household costs over time. Easy self-installation makes sustainable water and energy savings practical. Durable material High quality PVC construction provides years of use while preserving the elasticity and precision of the flap mechanism. Quick installation Thoughtful design enables fast valve replacement. Tool-free assembly is suitable for both amateurs and experienced DIY enthusiasts. Use scenarios - At home: replace a worn 3 inch valve to prevent running and restore efficient flush performance, eliminating wasted water with each use. - In rental properties: perform quick valve changes between tenants to minimize downtime and water waste, keeping toilets reliable with minimal disruption. - In small offices or schools: maintain multiple restrooms efficiently with a tool-free, fast installation that reduces maintenance time and downtime.