Abstract: A tank-type flusher is located in the water storage tank for flushing a toilet. The tank-type flusher includes an intake valve and a flush valve. The intake valve is connected to an external water source and constructed to close water flow to the water storage tank at about a predefined water level in the water tank. The flush valve is constructed to control a flush valve member between a seated state and an unseated state allowing water discharge from the water tank into a toilet bowl. The tank-type flusher may be controlled by a sensor module located at a reference location external to the water storage tank.

Abstract: A water delivery system includes a water input port, a control circuit, and a valve device. The water input port is constructed to be coupled to a water conduit receiving water from a remotely located water source. The valve device includes an actuator located near and connected to the water input port; wherein the valve device is constructed to receive control signals from the controller for providing water to a water delivery unit. The controller may be battery operated. The actuator may be a latching actuator, a non-latching actuator, or an isolated latching actuator. The controller may include a microcontroller coupled and to a sensor. The system may include a communication interface constructed and arranged to provide data to the microcontroller. The control circuit may include a power consumption controller. The control circuit includes a voltage regulator.

Abstract: Disclosed is a method and system for converting or retrofitting manually-operated flush valves. A conversion system for converting an installed manually-operated flush valve includes a power module, a control module, and a driver module mechanically coupled to a manual handle to externally activate the converted flush valve.

Abstract: An automatic bathroom flusher includes a body having an inlet in communication with a supply line and an outlet in communication with a flush conduit, a valve assembly in the body positioned to close water flow between the inlet and the outlet upon sealing action of a moving member at a valve seat thereby controlling flow from the inlet to the outlet, an actuator for actuating operation of the moving member, and a controller.

Abstract: The present invention is directed to novel optical sensors and novel methods for sensing optical radiation. The novel optical sensors and the novel optical sensing methods are used, for example, for controlling the operation of automatic faucets and flushers. The novel sensors and flow controllers (including control electronics and valves) require only small amounts of electrical power for sensing users of bathroom facilities, and thus enable battery operation for many years. A passive optical sensor includes a light detector sensitive to ambient (room) light for controlling the operation of automatic faucets or automatic bathroom flushers.

Abstract: A multizone irrigation system includes a central control unit having a central control system interfaced with a central valve and a central communication unit. The central valve regulates water flow for irrigation from a water source and can lower water pressure in the pipes at its output. The central communication unit is constructed to transmit or receive pressure based communication signals providing irrigation information. Each zone includes a sprinkler control unit having a sprinkler connected to a water pipe for irrigation. Each sprinkler control unit includes a local controller interfaced with a local valve for controlling water flow to the sprinkler. The sprinkler control unit also includes a local communication unit (e.g., a pressure sensor) constructed to receive communication signals from the central communication unit and provide received irrigation information to the local controller.

Abstract: An automatic bathroom flusher includes a body having an inlet in communication with a supply line and an outlet in communication with a flush conduit, a valve assembly in the body positioned to close water flow between the inlet and the outlet upon sealing action of a moving member at a valve seat thereby controlling flow from the inlet to the outlet, an actuator for actuating operation of the moving member, and a controller.