Examples of a leak detection system are disclosed. In one example according to aspects of the present disclosure, a leak detection system includes a housing defining an interior, the housing connected to a component of a water distribution system. The leak detection system also includes a leak detection sensor contained within the interior of the housing and configured to detect a leak within the water distribution system. Additionally, the leak detection system includes a digital signal processing circuit in communication with the leak detection sensor.

A nozzle cap for a fire hydrant includes a cap cover comprising a metal material; and a cap body defining a cap axis, the cap body comprising: an inner housing comprising a metal material; and an outer housing comprising a non-metal material, the outer housing disposed axially between the inner housing and the cap cover, the outer housing comprising a substantially circumferential wall, the substantially circumferential wall defining a cavity between the inner housing and the cap cover, wherein a first end of the substantially circumferential wall engages the inner housing.

Systems and methods are disclosed herein for an infrastructure monitoring system. The infrastructure monitoring system may include an operations center; a monitoring device, the monitoring device may be coupled to a component of the infrastructure, include at least one sensor sensing at least one condition within the infrastructure, a data storage device storing data sensed by the at least one sensor, a transceiver device adapted to transmit and receive data, and a processor communicatively coupled to the at least one sensor, the data storage device, and the transceiver device, the processor may be configured to receive the data sensed by the at least one sensor, determine, based on the data sensed by the at least one sensor, if there is a problem with the at least one condition within the infrastructure that the at least one sensor sensed, upon determining that there is a problem with the at least one condition within the infrastructure that the at least one sensor sensed, transmitting a message to the operations center via the transceiver device, and periodically compiling sensing data stored in the data storage device and transmitting the compiled sensing data to the operations center via the transceiver device; and a control device, the control device may be communicatively coupled to at least one of the operations center and the monitoring device, and the control device may be configured to operate at least one output device when signaled by at least one of the operations center and the monitoring device, and the control device may be positioned within a fire hydrant.

Systems and methods are disclosed herein for an infrastructure monitoring system. The infrastructure monitoring system may include an operations center; a monitoring device, the monitoring device may be coupled to a component of the infrastructure, include at least one sensor sensing at least one condition within the infrastructure, a data storage device storing data sensed by the at least one sensor, a transceiver device adapted to transmit and receive data, and a processor communicatively coupled to the at least one sensor, the data storage device, and the transceiver device, the processor may be configured to receive the data sensed by the at least one sensor, determine, based on the data sensed by the at least one sensor, if there is a problem with the at least one condition within the infrastructure that the at least one sensor sensed, upon determining that there is a problem with the at least one condition within the infrastructure that the at least one sensor sensed, transmitting a message to the operations center via the transceiver device, and periodically compiling sensing data stored in the data storage device and transmitting the compiled sensing data to the operations center via the transceiver device; and a control device, the control device may be communicatively coupled to at least one of the operations center and the monitoring device, and the control device may be configured to operate at least one output device when signaled by at least one of the operations center and the monitoring device, and the control device may be positioned within a fire hydrant.

A sanitary hydrant comprises an isolated reservoir that can be positioned below a freeze level at the location of installation. A piston within the isolated reservoir is operable to expel, during a downward stroke, stored fluid from the reservoir before actuating a valve that allows fluid to flow from a fluid supply source through the hydrant. On an upward stroke, the piston releases the valve and generates a negative pressure within the reservoir that draws fluid from within the hydrant into the reservoir.

A sanitary hydrant comprises an isolated reservoir that can be positioned below a freeze level at the location of installation. A piston within the isolated reservoir is operable to expel, during a downward stroke, stored fluid from the reservoir before actuating a valve that allows fluid to flow from a fluid supply source through the hydrant. On an upward stroke, the piston releases the valve and generates a negative pressure within the reservoir that draws fluid from within the hydrant into the reservoir.

An antenna assembly includes a curved printed circuit board (PCB) configured to mount around a curved surface. The curved PCB can include an outward-facing first side and an inward-facing second side with a plurality of antenna structures disposed on one of the first side and second side of the PCB. The plurality of antenna structures can be configured to provide directional radiation in at least one frequency band.

A communications hub for a hydrant can include a plug comprising a non-metallic material and configured to be sealably received within a plug bore defined in a flange of a bonnet of the hydrant, the flange separating an interior cavity of the hydrant from a bonnet cavity of the hydrant; a PCB; at least one battery in electrical communication with the PCB; and an antenna configured for wireless communication with a sensing device located within the interior cavity of the hydrant and in electrical communition with the PCB, the antenna able to receive a wireless signal from the sensing device.

A nozzle cap assembly can include a nozzle cap housing configured to mount on a hydrant, a nozzle cap cover mounted on the nozzle cap housing, an antenna cover positioned on the nozzle cap housing and secured by the nozzle cap cover, the nozzle cap housing, the antenna cover, and the nozzle cap cover can define an antenna cover cavity, and an antenna assembly can be positioned in the antenna cover cavity.

A device for detecting adverse events in a fire hydrant, the device comprising a housing configured to mount to an exterior of the fire hydrant, the housing having a surface in register with the exterior of the fire hydrant, the surface having an aperture therein, a cover enclosing the housing and mounted to the fire hydrant at the surface. The housing further includes a controller, a transceiver, and a water sensor.