Abstract: According to at least one aspect, a fluid flow monitoring system includes an ultrasonic sensor for generating measurement signals associated with respective ultrasonic signals propagating through the fluid in the lumen, a shut-off valve for blocking fluid flow in the lumen, and a controller. The controller can be communicatively coupled to the ultrasonic sensor and to the shut-off valve. The controller can be configured to compute a plurality of fluid flow parameter estimates based on a plurality of measurement signals generated by the ultrasonic sensor over a time window while the shut-off valve is open. The controller can obtain an offset value associated with fluid flow parameter measurements during a zero flow state of the shut-off valve. The controller can then check for presence of a fluid leak event based on the fluid flow parameter estimates over the time window and the offset value.

Abstract: A fluid manifold is capable of channeling and monitoring fluid flow within a fluid distribution system. The manifold includes one or more input lumens. Each input lumen associated with a respective inlet port. The manifold also includes a plurality of output lumens such that each output lumen is associated with a respective outlet port and at least one input lumen is coupled to two or more output lumens. The manifold also includes one or more flow sensors capable of measuring fluid flow parameters of fluid flowing through at least one of the one or more input lumens and the plurality of output lumens. In some implementations, a flow sensor can be mounted to each output lumen of the manifold.

Abstract: Systems and methods described herein allow for reliable and computationally efficient detection of fluid leak events or abnormal fluid usage/flow events. A fluid flow meter can measure fluid flow parameter values during a training phase. The fluid flow meter can generate, using the fluid flow parameter data, a training fluid flow duration pattern indicative of, for each value range of a plurality of value ranges of a respective time threshold value. The time threshold value can represent an estimate of a maximum fluid flow duration, within a given fluid flow event, for fluid flow associated with the corresponding value range. During a detection phase, the fluid flow meter can determine, for a value range, a respective fluid flow duration within a current fluid flow event. The fluid flow meter can detect a leak event upon the fluid flow duration exceeds the time threshold value for the same value range.

Abstract: A valve assembly includes a body having a fluid inlet disposed on a first end of the body and a fluid outlet disposed on a second end of the body in fluid connection with the fluid inlet. The valve assembly further includes a push-to-connect fitting which is integral to the body and configured to connect to an end of a pipe, a stem configured to seal the body in a first position and configured to allow fluid to flow from the fluid inlet of the body to the fluid outlet in a second position, and a connector surrounding at least part of the push-to-connect fitting. The body is configured to house a sealing ring. The push-to-connect fitting is configured to communicate the fluid inlet with the end of the pipe. The sealing ring secured by the push-to-connect fitting is configured to provide a seal between the fluid inlet and the end of the pipe.

Abstract: An ultrasonic fluid flow meter can include a casing structure including a hook portion configured to engage a conduit to secure the casing structure to the conduit. The ultrasonic fluid flow meter can include a transducer block disposed within the casing structure and seating ultrasonic transducers. A distance between the hook portion and the transducer block along a direction transverse to the transducer block can be adjustable. The ultrasonic transducers can face the conduit when the casing structure is secured to the conduit via the hook portion.

Abstract: A thermostatic mixing valve including: a first fluid inlet; a second fluid inlet; an outlet; a thermostatic element connected to a return spring and a piston such that movement of the thermostatic element assists with moving the piston, movement of the piston controlling fluid flow from the first fluid inlet and the second fluid inlet to the outlet; a housing containing an overtravel spring, the overtravel spring configured to resist a force applied by the thermostatic element during movement thereof; and a plunger extending into the housing, the plunger configured to engage the overtravel spring, wherein rotating the plunger adjusts the resistance applied onto the thermostatic element from the overtravel spring.

Abstract: A valve assembly includes a body, a fitting, and a stopper assembly. The body has a first end and a second end. The body includes a connector portion positioned at the first end, a nozzle portion positioned at the second end, and an intermediate portion connecting the connector portion to the nozzle portion. The connector portion includes a peripheral wall having a crimped end that defines a fluid inlet. The nozzle portion defines a fluid outlet. The connector portion, the intermediate portion, and the nozzle portion cooperatively define a fluid flow path extending from the fluid inlet to the fluid outlet. The fitting is disposed within the peripheral wall. The fitting is held within the peripheral wall by the crimped end. The stopper assembly is coupled to the body along the intermediate portion. The stopper assembly is configured to facilitate selectively restricting a flow along the fluid flow path.

Abstract: A fluid manifold is capable of channeling and monitoring fluid flow within a fluid distribution system. The manifold includes one or more input lumens. Each input lumen associated with a respective inlet port. The manifold also includes a plurality of output lumens such that each output lumen is associated with a respective outlet port and at least one input lumen is coupled to two or more output lumens. The manifold also includes one or more flow sensors capable of measuring fluid flow parameters of fluid flowing through at least one of the one or more input lumens and the plurality of output lumens. In some implementations, a flow sensor can be mounted to each output lumen of the manifold.

Abstract: A fluid flow meter system for monitoring fluid flow through a lumen includes a first ultrasonic transducer configured to transmit one or more versions of a transmit (TX) signal through a fluid flowing within the lumen, and a second ultrasonic transducer configured to receive one or more respective receive (RX) signals. The fluid flow meter system includes an analog-to-digital converter (ADC) configured to sample, at a first frequency, the one or more RX ultrasonic signals and a processor configured to generate a fine resolution signal based on the one or more RX ultrasonic signals. The fine resolution signal is associated with a second sampling rate higher than the first sampling rate. The processor is also configured to compute a cross-correlation signal indicative of cross-correlation between the fine resolution signal and a waveform and determine an estimated fluid flow parameter based on the computed cross-correlation signal.

Abstract: According to at least one aspect, the present disclosure is directed to leak detection. There is pressure sensor for measuring pressure of fluid within a hollow structure, a shut-off valve for controlling fluid flow through the hollow structure, and a processor communicatively coupled to the pressure sensor and to the shut-off valve. The processor can acquire, from the pressure sensor, a first pressure measurement of the fluid while the shut-off valve is in an open state, and a second pressure measurement of the fluid while the shut-off valve is in a closed state. The processor can detect a fluid leak event based on the first and second pressure measurements.

Abstract: A disinfection device for a valve, the disinfection device including: a mobile member having an outer portion including a camming surface configured to engage with an activation member such that rotation of the activation member relative to the camming surface, about an axis, moves the mobile member in the axial direction, wherein the mobile member is associated with an adjusting device of the valve such that movement of the mobile member in the axial direction moves at least part of the adjusting device to allow adjustment of a predetermined outlet temperature of the valve.