Flush Valve Assembly

Abstract

A flush valve assembly comprising an inlet configured to receive inlet source water; an outlet configured to deliver flush water to a sanitaryware fixture; a housing; and a waterway insert configured to be positioned within the housing, wherein the housing comprises an inlet opening comprising the flush valve assembly inlet, the housing comprises an outlet opening comprising the flush valve assembly outlet, the waterway insert comprises an inlet which may be configured to align with the housing inlet opening, and the waterway insert comprises a outlet which may be configured to align with the housing outlet opening. The waterway insert may be coupled to a manifold positioned over a flush valve assembly upper chamber.

1 . A flush valve assembly, comprising
 an inlet configured to receive inlet source water;   an outlet configured to deliver flush water to a sanitaryware fixture;   a housing; and   a waterway insert configured to be positioned within the housing,   wherein   the housing comprises an inlet opening comprising the flush valve assembly inlet,   the housing comprises an outlet opening comprising the flush valve assembly outlet,   the waterway insert comprises an inlet, and   the waterway insert comprises an outlet configured to align with the housing outlet opening.   
     
     
         2 . The flush valve assembly according to  claim 1 , wherein the waterway insert comprises a thermoplastic. 
     
     
         3 . The flush valve assembly according to  claim 1 , wherein the waterway insert comprises an upper top opening configured to receive a piston valve apparatus or a diaphragm valve apparatus. 
     
     
         4 . The flush valve assembly according to  claim 1 , wherein the waterway insert comprises no opening configured to receive a manual flush assembly. 
     
     
         5 . The flush valve assembly according to  claim 1 , wherein the waterway insert comprises an upper side opening configured to receive a pressure sensor, and wherein the upper side opening is configured to be positioned adjacent a flush valve assembly lower chamber. 
     
     
         6 . The flush valve assembly according to  claim 5 , wherein the upper side opening is threaded. 
     
     
         7 . The flush valve assembly according to  claim 1 , wherein the waterway insert comprises a lower side opening configured to receive a pressure sensor, and wherein the lower side opening is configured to be positioned between the waterway insert inlet and the waterway insert outlet. 
     
     
         8 . The flush valve assembly according to  claim 1 , wherein the waterway insert includes a valve seat. 
     
     
         9 . The flush valve assembly according to  claim 1 , wherein the waterway insert comprises an upper annular shoulder configured to receive a valve manifold. 
     
     
         10 . The flush valve assembly according to  claim 1 , wherein the waterway insert comprises a top annular shoulder configured to receive a first annular securing part. 
     
     
         11 . The flush valve assembly according to  claim 10 , comprising a second annular securing part configured to couple to the first annular securing part and to position the waterway insert in the housing. 
     
     
         12 . The flush valve assembly according to  claim 11 , wherein the first annular securing part and the second annular securing part are configured to secure a manifold in the waterway insert. 
     
     
         13 . The flush valve assembly according to  claim 11 , wherein the first annular securing part comprises a thermoplastic, and the second annular securing part comprises a metal. 
     
     
         14 . The flush valve assembly according to  claim 1 , wherein the waterway insert comprises a substantially cylinder-like shape. 
     
     
         15 . The flush valve assembly according to  claim 1 , comprising a manifold coupled to an upper end of the waterway insert. 
     
     
         16 . The flush valve assembly according to  claim 15 , wherein the manifold comprises a thermoplastic. 
     
     
         17 . The flush valve assembly according to  claim 15 , wherein the manifold comprises a first opening configured to receive a solenoid, wherein a manifold lower surface is positioned over a flush valve assembly upper chamber. 
     
     
         18 . The flush valve assembly according to  claim 17 , wherein the manifold comprises a second opening configured to receive a manual actuator. 
     
     
         19 . The flush valve assembly according to  claim 15 , wherein the manifold comprises a sensor opening configured to receive a pressure sensor. 
     
     
         20 . The flush valve assembly according to  claim 19 , wherein the sensor opening is threaded.