Fluidmaster LEAK SENTRY 400LS Fill Valve, 9 to 14 in, Plastic. This 400LS universal water-saving toilet fill valve comes with leak prevention technology and a water-saving roller clamp. Leak prevention technology stops the automatic refill of the toilet tank due to a worn or faulty flapper. The included roller clamp allows you to regulate the amount of water refilling the toilet bowl for maximum efficiency. Quickly replace inefficient, outdated and leaky toilet fill valves with this water-saving design. The 400LS is a code approved, anti-siphon design, that won’t contaminate the fresh water supply.
