Patent ID: 6923425

Claim:
A flush valve diaphragm comprising a body portion and a peripheral sealing portion, the body portion being flexible and having a central passageway, the peripheral sealing portion comprising a sealing ring with a thickness greater than the body portion extending along the periphery of the flush valve diaphragm; a first integral ring on a first side of the flush valve diaphragm radially spaced from the sealing ring; a second integral ring on a second side of the flush valve diaphragm radially spaced from the sealing ring; an integral filter integrally formed in the flush valve diaphragm located between the sealing ring and the first integral ring and between the sealing ring and the second integral ring; a bypass chamber positioned between the first integral ring and the sealing ring, an exit chamber positioned between the second integral ring and the sealing ring; and a bypass orifice extending from and allowing fluid communication between the bypass chamber and the exit chamber.