Sloan Valve Company

Daniel J Carroll

Jerry P Gronwick

John R Wilson

Nhon T Vuong

Jesse L Aparicio

James W Kotelensky, Jr

Baffle

A battery-powered, sensor-operated flush valve for controlling water flow through a toilet room device such as a urinal or water closet includes a flush valve body with an inlet and an outlet. There is a valve mechanism for controlling flow through the flush valve body. A solenoid is attached to the flush valve body and has a piston which is positioned to contact the valve mechanism relief valve. The solenoid is in circuit with a battery and a sensor whereby a user of toilet room device will cause battery power to be applied to the solenoid coil, which will in turn move the piston to contact the relief valve to institute a flushing operation.

Sensor-operated solenoid direct drive flush valve

A flush valve includes a body with an inlet, an outlet, a valve seat at the outlet, and a piston movable in the body toward and away from the valve seat to control flow through the outlet. The piston has a chamber and there is a refill orifice in the piston connecting the chamber with the body inlet. Pressure in the chamber maintains the piston closed upon the valve seat. A relief valve in the piston vents the chamber to the outlet to permit the piston to move away from the valve seat to open flow from the inlet to the body outlet. The piston has a guide portion which extends downstream of the valve seat when the piston is in the closed position. The guide portion of the piston has a plurality of outwardly extending axial ribs, the outer surface of which is radially in alignment with the path of flow through said valve seat. The piston area between the ribs is closed by a skirt to confine the path of flow exteriorly of the piston portion to provide a defined flow path through the valve seat from the inlet to the outlet.

Flushometer piston

A flush valve includes a body with an inlet and an outlet and a valve seat at the outlet. There is a valve movable in the body toward and away from the valve seat to control flow through the flush valve. There is a chamber in the body above the valve and there is a refill orifice in the valve connecting the chamber with said body inlet. Pressure in the chamber maintains the valve closed upon its valve seat, with the size of the refill orifice controlling the time to fill the chamber from the inlet which determines the time of flow of water from the inlet through the outlet. There is a relief valve for venting the chamber to the outlet when the relief valve is open, thereby causing the valve to move away from its seat permitting flow from the inlet through the outlet. There is a cover threadedly attached to the body and a seal element formed from an elastomeric material positioned between the cover and the body. The seal element has a surface finish with sufficient lubricity such that the cover will slide upon its surface when the cover is threadedly attached to the body. The seal element is sufficiently elastomeric such that it distorts under pressure from the cover to form a tight seal between the cover and the body.

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Hammond, IN, United States of America

Daniel J Carroll