Aspects and techniques of the present disclosure relate to a bleed valve system for bleeding fluid of a first, lower, specific gravity from a fluid of a second, higher, specific gravity, in a fluid system. The techniques can be used to provide a bleed valve system, for a pressurized fluid system, that is not sensitive to rotational orientation around a mounting axis.

The present disclosure provides a fluid detection system that includes a pipe coupling member having a perforated portion having one or more openings formed in the perforated portion, the one or more openings being dimensioned to allow fluid to pass through the perforated portion from an interior surface of the pipe coupling member; a sensor ring disposed about the perforated portion; and a sensor controller configured to detect a capacitance within of the sensor ring and to provide a detection signal indicative of a detected capacitance of fluid flowing through the one or more openings and contacting the sensor ring.

An assembly is provided for performing start-up testing on a fluid flow control device. The assembly includes a retainer adapted to be disposed in a valve body of the fluid flow control device, and a sealing assembly coupled to a portion of the retainer and adapted to be disposed adjacent a valve seat of the fluid flow control device. The sealing assembly includes one or more sealing elements configured to provide a seal during start-up testing at a service temperature of between approximately 325 degrees Fahrenheit and approximately 1250 degrees Fahrenheit.

The claimed method and system provide a process control device monitoring system and a process control valve assembly with a process control device monitoring system to measure one or more operating states of a process control device. The process control device monitoring system may also associate a time-stamp with the one or more measured operating states of the process control device in response to a trigger generated based on the one or more measured operating states. The process control device monitoring system may also transmit the time-stamp and an indication of the one or more operating states to a monitoring device.

Fluid detection systems and methods using the same are disclosed. In embodiments the fluid detection systems include a sensor module and an electronics module. The sensor module includes a sensor housing that includes a liquid flow path and a sensor element disposed around at least part of the liquid flow path. The sensor element can detect a capacitance of the liquid flow path and provide a sensor signal to a controller in the electronics module. The electronics module can determine a detected capacitance in the liquid flow path based at least in part on the sensor signal, and can determine whether a wet event has occurred based on a comparison of the detected capacitance to a threshold capacitance. Methods using the fluid detection systems and fluid supply systems including the fluid detection systems are also disclosed.

A sprinkler backflow alert system includes a sprinkler system, a building fire panel, a backflow preventor including at least one shut-off valve, a fluid detection system, and a tamper switch. The backflow preventor may be fluidly coupled upstream of the sprinkler system. The fluid detection system is configured to detect a discharge of water from the backflow preventor and generate a water discharge signal corresponding to the backflow discharge. The tamper switch is configured to detect a change in a position of the at least one shut-off valve and generate a tamper signal in the event the at least one shut-off valve is closed or partially closed. When a backflow discharge event occurs, a signal is sent to the fire panel triggering the building fire alarm as well as sending an alert to the local fire department and facility owner.

A leak detection and response system includes a valve assembly with a housing defining an internal passageway. The valve assembly includes an internal inlet port, an internal outlet port, a valve port assembly, an external inlet port, and an external outlet port each in fluid communication with the internal passageway. The valve assembly includes a first sensor port disposed either between the external outlet port and the internal inlet port, or between the external inlet port and the internal outlet port. The valve assembly includes a first leak sensor positioned in the first sensor port for generating a signal indicating a presence of water. The valve assembly includes a controller configured to receive the signal from the first leak sensor, and control the valve assembly to align the valve port assembly to block water flow from the external inlet port.