Korky makes the toilet-repair parts plumbers keep on the truck — fill valves, flappers, flush valves, and the adjustable and universal kits that fit most American toilets. The QuietFILL platform is the quieter alternative to older ballcock-style valves, and the chlorine-resistant rubber outlasts generic flappers two-to-one.
The 435BP is Korky’s universal flush valve seal kit — replaces worn flush-valve seats on older toilets without swapping the entire valve. The corrosion-resistant materials stop running-toilet leaks caused by pitted seats, and the kit includes the seal plus the tools to install it in about ten minutes.
Korky is a brand of Lavelle Industries, a family-owned Wisconsin manufacturer that has been producing toilet-repair parts since 1957. Fill valves and flappers are molded and assembled in American facilities, and the brand is known in the plumbing trade as the go-to replacement for warranty-grade repairs.

