Patent ID: 6299127
Filing Date: 2001-10-09
Classification: E03D,F16K

Abstract:
A flush valve for use on toilet devices such as urinals and water closets includes a body having an inlet and an outlet, a valve seat in said body between said inlet and outlet, a valve member movable within said body toward and away from said valve seat to control water flow between said inlet and outlet,means for causing movement of said valve member away from said valve seat to connect said inlet and outlet through said valve body, including a housing on said valve body, a chamber in said housing, a piston movable axially within said chamber and into said valve body for contact with said valve member, a spring within said chamber and normally biasing said piston outwardly of said valve body, a controlled water passage in said housing connecting said valve body inlet and said chamber to provide water under pressure to move said piston, against said spring, into said valve body to cause operation of said valve member, the improvement comprising:a groove in the exterior of said piston facing and adjacent a wall of said chamber, a split ring in said groove, said split ring being outwardly biased against said chamber wall and providing controlled water flow about said piston as said piston moves outwardly within said chamber in response to return force from said spring.