Patent ID: 6616119
Filing Date: 2003-09-09
Classification: E03D,F16K

Abstract:
A diaphragm-type flush valve including a body having an inlet and an outlet, a valve seat between said inlet and outlet and a valve member movable to a closing position on said valve seat to control water flow between said inlet and outlet, said valve member including a flexible diaphragm peripherally attached to said body, a pressure chamber above said diaphragm with water therein holding said valve member on said valve seat,a bypass opening in said flexible diaphragm connecting said inlet with said pressure chamber to provide water therefor to move said diaphragm to said closing position, a shroud attached to said diaphragm upstream of said bypass opening and extending downwardly below said diaphragm, the shroud defining a filter chamber in fluid communication with the bypass opening, legs which extend beyond the shroud to define filter openings, said filter openings having a combined cross sectional area greater than that of said bypass opening, and the filter openings being shaped to prevent the passage of particles of a size which will not pass through the bypass opening.