A fluid pressure reducing valve apparatus includes a pressure reducing valve. The valve has: a body containing a fluid-flow chamber, a liquid supply orifice into the chamber, a liquid outlet from the chamber, a regulation plate opposed to the orifice, a spring acting to urge the plate towards the orifice, and a diaphragm between the plate and the body to close the chamber between them. A controllable motor drive acts between the body and an end of the spring remote from the plate. A flow meter is positioned downstream of the outlet. A controller is arranged to receive flow data from the flow meter and to control the motor drive for withdrawal of the remote end of the spring in accordance with flow rate measured by the flow meter. For an increase in demand flow, the plate is partially withdrawn to maintain downstream pressure on such increase and vice versa.

An isolation device and method are provided for isolating a plumbing system of a premises from a potable water source if permissible input water pressure parameters are violated. After the plumbing system has achieved a desired input water pressure, the isolation device places the plumbing system in an isolated state and only removes the plumbing system from the isolated state if the isolation device detects a demand for water from the plumbing system and if the isolation device determines that permissible input water pressure parameters are not being violated. Once the demand no longer exists, the isolation device returns the plumbing system to the isolated state.

A backwater flow detection device for detecting backwater flow between a building and a sewer conduit using air pressure detection in air pockets in the sewer conduit. The backwater flood detection device detects backwater flow events including backflow events from a sewer line as well as wastewater blockage events that can result in wastewater backflow into a building. The water detection sensor allows the homeowner or building manager to be warned when there is an issue with backwater flow in or near the building, and also with the backwater valve.

Device (1) for detecting a liquid leakage, wherein a leakage detection function of the device (1) is lockable so that the leakage detection function is protectable against unauthorized use.

A method for locating a leak (19) in a water supply network with a water source (11) and one or more water consumption meters (21, 22) on the consumer side. The method includes calculating a length of the pipe (17) between the consumption meter (21) and the leak (19) location based on a temporal temperature curve and a quantity of water flowing through the at least one consumption meter (21).

An electronic sensing and allocation system is provided for a distributed water infrastructure containing a plurality of differing appliances. The system may receive, from at least one sensor upstream of the plurality of differing appliances, a plurality of signals indicative of water usage within the distributed water infrastructure. The system may output a first indication of a first volume of water together with an indicator attributing the first volume of water to a first rate schedule, and output a second indication of a second volume of water together with an indicator attributing the second volume of water to a second rate schedule. The system may enable billing of the first and second volumes of water to a consumer at differing rates based on differing uses.

Provided is a water leakage detection method for detecting water leakage of a water pipe by a water leakage detection apparatus that includes a processor and a display device. The method includes: a first procedure of the processor acquiring a water leakage detection result of the water pipe in a district metered area, the district metered area being a range to be measured by a flow meter; a second procedure of the processor acquiring a water leakage detection result of the water pipe obtained based on measurement data of a vibration sensor terminal attached to the water pipe; and a third procedure of the processor outputting, a screen for displaying the water leakage detection result obtained based on the measurement data of the flow meter together with the water leakage detection result obtained.

A remote hydraulic and water quality monitoring and telemetry device for being connected to a fire hydrant. The device connects to a hydrant nozzle via a swivel connection and includes a control valve mounted inside the nozzle to conserve space and release a determined volume of water from the hydrant lateral pipe to provide a sample from the main line pipe. The device includes a multi-parameter water quality sonde or sensors, data acquisition, and telemetry hardware. The door of the enclosure may include a solar panel. The device may rest on a plate mounted to the hydrant riser flange after the hydrant and upper hydrant valve stem are removed. The device may rest on the ground and be connected to a hydrant nozzle by a rotating pipe assembly which can be adjusted to be positioned at locations around the hydrant and at varying elevations relative to the hydrant nozzle.

Several water flow devices are coupled to monitor and control water outlets. The devices are monitored by a water conservation server enforcing water conservation policies independently for each water outlet of a system. The water conservation server can automatically implement changes to a particular water outlet, or just notify a user via email or other mechanisms.

The invention relates to a drinking water supply system including a drinking water line system, a plurality of drinking water withdrawal points connected to the drinking water line system, at least one sensor which is designed to determine measuring values, a central control device which is designed to receive and evaluate the measuring values determined by the at least one sensor, a plurality of decentralized control elements which are designed to influence at different locations in the drinking water supply system one or more properties of the water guided in the drinking water supply system, wherein the central control device is designed to control the control elements for influencing the one or more properties of the water guided in the drinking water supply system, and wherein a plurality of control elements are or can be combined to form a virtual group.