Flush Valve Assembly

原文（中国語）

A flush valve assembly for a siphonic flush toilet, comprising a flush valve body and a flapper cover, wherein the flush valve body is coupled to an overflow tube or is coupled to an overflow tube coupling configured to receive an overflow tube, the flapper cover is configured to rotatably lift off the flush valve inlet at an open angle in a direction towards the overflow tube or the overflow tube coupling, and at least one of the flapper cover top face, the overflow tube, and the overflow tube coupling comprises a stop component configured to determine the flapper cover open angle during a flush cycle.