Abstract: A toilet (10) having an automatic flush assembly (50) includes a toilet bowl (14), a water holding tank (12) for supplying water to the toilet bowl (14), and a flush valve (22). The holding tank (12) supplies water to the toilet bowl (14) and defines a handle opening (34) for an actuating handle (36) of the toilet (10). The flush valve (22) provides fluid communication between the toilet bowl (14) and the holding tank (12). The automatic flush assembly (50) is mounted in the handle opening (34) and includes a sensor section (54), a control section (56), and an actuating mechanism (58). The sensor section (56) detects the presence of a person in front of the toilet bowl (14). The control section (56) receives a detection signal from the sensor section (54) and initiates a flush signal to the actuating mechanism (58), which actuates the flush valve (22).

Abstract: A flush valve for a waste water system comprises a valve including a fluid inlet, a fluid outlet and a main valve element adapted for movement to allow fluid flow between the fluid inlet and the fluid outlet based on a pressure differential across a portion of the main valve element. The valve also includes a vent system comprising a control chamber in flow communication with the fluid inlet of the valve and a vent outlet in flow communication with the fluid outlet of the valve, and a solenoid for venting fluid venting fluid from the control chamber to the fluid outlet. A pressure sensor, such as an electronic pressure transducer, senses the fluid pressure of fluid within the vent system. When a predetermined pressure threshold is reached or exceeded, the solenoid can be energized to release fluid from the control chamber.

Abstract: A flush valve for a waste water system includes a valve body and a vent system. The valve includes a fluid inlet, a fluid outlet and a main valve element extending therebetween and adapted for movement to allow fluid flow therethrough based on a pressure differential across a portion of the main valve element. The vent system includes a control chamber, in flow communication with the fluid inlet of the valve and a vent outlet in flow communication with the fluid outlet of the valve. The flush valve further includes a relief system including a relief chamber with a relief inlet in flow communication with the control chamber and a relief outlet in flow communication with the vent outlet. A mechanical relief device is configured to open and close the relief inlet based on a predetermined fluid pressure at the relief inlet, thereby venting fluid from the control chamber to the vent outlet.

Abstract: A method is provided for retrofitting a conventional plastic valve to allow the valve to be utilized in a waste water system. The method includes strengthening the valve or valve housing using various methods.

Abstract: A toilet (10) having an automatic flush assembly (50) includes a toilet bowl (14), a water holding tank (12) for supplying water to the toilet bowl (14), and a flush valve (22). The holding tank (12) supplies water to the toilet bowl (14) and defines a handle opening (34) for an actuating handle (36) of the toilet (10). The flush valve (22) provides fluid communication between the toilet bowl (14) and the holding tank (12). The automatic flush assembly (50) is mounted in the handle opening (34) and includes a sensor section (54), a control section (56), and an actuating mechanism (58). The sensor section (56) detects the presence of a person in front of the toilet bowl (14). The control section (56) receives a detection signal from the sensor section (54) and initiates a flush signal to the actuating mechanism (58), which actuates the flush valve (22).

Abstract: The present invention discloses a pinch valve for replacing a diaphragm valve in a plumbing fixture. The plumbing fixture includes an inlet chamber defining a fluid inlet and in fluid communication with an inside chamber defining a fluid outlet. The pinch valve includes a cartridge member with a fluid inlet opening, a fluid outlet opening and a cartridge chamber defined by a cartridge chamber wall and in fluid communication with the fluid inlet opening and the fluid outlet opening. A flexible sealing member is positioned at least partially within the cartridge chamber and includes a wall with an inner surface defining an inner chamber and an outer surface defining an outer chamber between the outer surface of the flexible sealing member wall and the cartridge chamber wall. The inlet chamber of the plumbing fixture is in fluid communication with the inner chamber and the outer chamber.

Abstract: The present invention discloses a pinch valve for replacing a diaphragm valve in a plumbing fixture. The plumbing fixture includes an inlet chamber defining a fluid inlet and in fluid communication with an inside chamber defining a fluid outlet. The pinch valve includes a cartridge member with a fluid inlet opening, a fluid outlet opening and a cartridge chamber defined by a cartridge chamber wall and in fluid communication with the fluid inlet opening and the fluid outlet opening. A flexible sealing member is positioned at least partially within the cartridge chamber and includes a wall with an inner surface defining an inner chamber and an outer surface defining an outer chamber between the outer surface of the flexible sealing member wall and the cartridge chamber wall. The inlet chamber of the plumbing fixture is in fluid communication with the inner chamber and the outer chamber.