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

Claim 10:
11. A flush valve for a plumbing fixture comprising:
a) a fluid inlet in fluid communication with a fluid source;
b) a fluid outlet in fluid communication with a plumbing fixture;
c) a cap positioned at an end opposite the fluid outlet, the cap having a hollow stem that extends down from a central opening in the cap; and
d) a piston valve for regulating fluid flow between the fluid inlet and the fluid outlet, the piston valve comprising:
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;

e) a solenoid connected to the cap,
wherein the rigid piston includes a by-pass orifice defined in the disc shaped member; and
f) 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.