Flush valve and flush valve assembly

Abstract

A flush valve assembly, comprising a flush valve comprising a flush valve body extending from a flush valve inlet to a flush valve outlet; a flapper cover having a top face and a bottom face and a front and a back; and a flush actuator comprising a lift rod; wherein the bottom face of the flapper cover is configured to enclose the flush valve inlet; and wherein the lift rod is coupled to the top face of the flapper cover and is configured to lift the flapper cover to partially open the flush valve and to fully open the flush valve.

1 . A flush valve assembly, comprising a flush valve comprising a flush valve body extending from a flush valve inlet to a flush valve outlet;
 a flapper cover having a top face, a bottom face, a front, and a back; and   a flush actuator comprising a lift rod;   wherein   the bottom face of the flapper cover is configured to enclose the flush valve inlet, and   the lift rod is coupled to the top face of the flapper cover and is configured to lift the flapper cover to partially open the flush valve and to fully open the flush valve.   
     
     
         2 . The flush valve assembly according to  claim 1 , wherein the flapper cover is configured to lift in a peeling motion from the flapper cover front towards the flapper cover back. 
     
     
         3 . The flush valve assembly according to  claim 1 , wherein the assembly is configured to provide multiple flush volumes. 
     
     
         4 . The flush valve assembly according to  claim 1 , wherein the flapper cover comprises a flexible portion and a rigid portion. 
     
     
         5 . The flush valve assembly according to  claim 1 , wherein the lift rod is coupled to the flapper cover top face via a multi-arm linkage. 
     
     
         6 . The flush valve assembly according to  claim 5 , wherein the multi-arm linkage comprises a pivot arm coupled to the flapper cover top face. 
     
     
         7 . The flush valve assembly according to  claim 6 , wherein the pivot arm comprises one or more joints around which it may flex. 
     
     
         8 . The flush valve assembly according to  claim 5 , wherein the multi-arm linkage comprises one or more slotted elements configured to allow movement of one or more arms. 
     
     
         9 . The flush valve assembly according to  claim 5 , wherein the multi-arm linkage comprises a substantially vertical arm extending from the flapper cover top face and coupled to the lift rod. 
     
     
         10 . The flush valve assembly according to  claim 5 , wherein the multi-arm linkage comprises an arm extending from the flapper cover top face front which is configured to couple to the flapper cover top face back. 
     
     
         11 . The flush valve assembly according to  claim 1 , wherein the lift rod is associated with a guide element adapted to guide a lifting or lowering movement of the rod. 
     
     
         12 . The flush valve assembly according to  claim 1 , wherein the flush valve body comprises a substantially circular flush valve inlet. 
     
     
         13 . The flush valve assembly according to  claim 1 , wherein the flush valve body comprises a non-circular flush valve inlet. 
     
     
         14 . The flush valve assembly according to  claim 1 , wherein the flush valve body comprises a radiused flush valve inlet. 
     
     
         15 . The flush valve assembly according to  claim 1 , wherein the flush valve body is downwardly-tapered. 
     
     
         16 . The flush valve assembly according to  claim 1 , wherein the assembly comprises a first stop element configured to provide a lift end-point of the flapper cover. 
     
     
         17 . The flush valve assembly according to  claim 16 , wherein the first stop element is substantially ring-shaped and is coupled to the flush valve body. 
     
     
         18 . The flush valve assembly according to  claim 16 , wherein the first stop element is adapted to guide the flapper cover to a position wherein it is substantially parallel with the valve inlet and substantially perpendicular with the lift rod. 
     
     
         19 . The flush valve assembly according to  claim 16 , wherein the assembly comprises a second stop element coupled to the flapper cover top face. 
     
     
         20 . The flush valve assembly according to  claim 19 , wherein the first stop element is configured to engage the second stop element.