Patent ID: 11885432
Assignee: SDB IP HOLDINGS, LLC
Field: Mechanical elements (Mechanical engineering)
Classification: CPC F  E  Y | IPC E  F

Claim 0:
1. A rigid piston assembly for use in a flush valve, the flush valve having a valve body with a fluid inlet and a fluid outlet, the rigid piston assembly comprising:
a cap configured to connect to the valve body at an end opposite the fluid outlet, the cap having a hollow stem that extends from a central opening in the cap;
a rigid piston comprising a disc shaped member having a central opening, an elongated hollow member that is attached to and extends down from the disc shaped member;
a solenoid connectable to the cap,
wherein the rigid piston includes a by-pass orifice defined in the disc shaped member; and
a by-pass device having a body with a first end, a second end, and a passageway positioned through the body, wherein the by-pass device is adapted to fit inside the by-pass orifice of the rigid piston, thereby establishing fluid communication between the fluid inlet and an upper chamber formed between the rigid piston and the cap,
wherein the flush valve further comprises a flow restricting element positioned within the hollow stem of the cap.