An emergency shutdown (ESD) system for a process control system includes an air supply coupled to a solenoid valve used to control a pneumatically-operated emergency isolation valve (ZV) via a switchover kit, a smart valve positioner coupled to the solenoid valve via the switchover kit, and an ESD controller. The ESD controller is configured to: control the supply of air from the air supply by the solenoid valve to open and close the ZV, and control the smart valve positioner so as to perform a partial stroke test on the ZV. The switchover kit includes a manifold having a plurality of valves coupling the air supply, the solenoid valve, and the smart valve positioner such that: based on a first setting of the plurality of valves, a first air flow path through the manifold connects the air supply directly to the solenoid valve, and based on a second setting of the plurality of valves, a second air flow path through the manifold connects the air supply to the solenoid valve through the smart valve positioner.

A controller is configured to perform in-situ testing on a control valve. These configurations can generate a signal that changes position of a closure member in the valve during operation of a process. These changes exercise components of the valve for a short period of time. This testing may result in data that can indicate whether the device is operating properly or may be in need of maintenance or repair.

A flow control valve adjusts an opening degree of a second channel by moving a needle valve in a first axis direction in accordance with a rotating operation amount of a knob provided at the first body, and includes a scale body, and a scale reading part that indicates the scale mark corresponding to the rotating operation amount of the knob, and a clutch mechanism that changes the scale mark of the scale body when the knob is rotated. The clutch mechanism includes an engaging portion, an engaged portion, and a clutch drive mechanism, and the scale reading part and the scale body rotate integrally when the engaging portion and the engaged portion are engaged. The clutch drive mechanism releases engagement between the engaging portion and the engaged portion when the knob is rotated and, after the scale mark is changed, re-engages the engaging portion with the engaged portion.

Systems and methods for a solenoid supervisory detection system which can detect the presence or absence of a solenoid plunger within a solenoid coil. These systems can be used to verify correct reassembly of a solenoid valve after it has been disassembled for testing.

Devices, systems and methods for leak detection are provided herein. Also provided are devices, systems and methods for monitoring and/or measuring fluid usage. In some aspects, a system comprising a sensor, a processing system, and a platform are provided. In some aspects, the sensor may be coupled to a spinning device. The sensor can be configured to detect fluid data, which can comprise, for example, displacement data of liquid and/or movement data associated with the liquid in a container and/or flow data associated with a flow of fluid in a conduit. The processing system can be coupled with the sensor and configured to communicate the fluid data. The platform can comprise an application communicatively coupled to one or more databases storing evaluation data (e.g., known pattern data) and configured to receive the fluid data and determine if there is a leak.

A system for igniting a grill can include a solenoid valve, a flame rectification sensor, an igniter, and a control circuit connected to the solenoid valve and the flame rectification sensor. The solenoid valve controls flow of gas to the grill's burner and includes a switch that closes when a handle connected to the switch opens the solenoid valve. The control circuit sends current to the solenoid valve when the switch is closed to hold the solenoid valve open. After the switch closes, the igniter is ignited. After ignition, the control circuit monitors the presence of a flame with a flame rectification sensor. If no flame is detected after a certain amount of time, the control circuit stops sending current to the solenoid valve to close the solenoid valve.

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.

A fluid flow control valve includes a valve body having a bore configured to convey fluid from an inlet port to an outlet port. The inlet and outlet ports, and the bore therebetween, define a fluid flow path through the valve body. A gate element is disposed in the bore. The gate element is positionable in the bore from a first position, which allows fluid flow through the bore, to a second position which restricts fluid flow through the bore. An actuator is coupled to the gate element and is configured to urge the gate element from the first position toward the second position. A fuse consisting of a transformable retainer is configured to retain the gate element in the first position, while the retainer is in a first condition, and to allow the gate element to move toward the second position when the retainer transforms to a second condition. The transformable retainer may be configured to transform from the first condition to the second condition responsive to a signal, e.g., a signal indicative of a thermal change or a fluid leak. The innovative valves are especially but not exclusively suited for governing flow in a heat transfer system, particularly a heat transfer system for dissipating heat from a plurality of computer servers. The innovative valves may be embodied in systems, methods, apparatuses, and components.

The present disclosure provides an electric water diverter, which includes a controller, a brushless DC motor, a core and a T-shaped body. The controller is electrically connected to a fixed Hall PCB circuit board and the brushless DC motor in turn. The brushless DC motor has a rotating shaft detachably connected to the core via a connector, which is also embedded with a magnet cooperating with the Hall PCB circuit board. The Hall PCB circuit board obtains a relative position signal of the rotating shaft through Hall induction and feeds the relative position signal back to the controller. A user controls the brushless DC motor to perform phase rotation through the controller and drive the connector and the core to selectively rotate forward or backward relative to the T-shaped body. Thereby, stepless adjustment of water flow from water outlet is achieved.

Methods, systems, and apparatus, including computer programs encoded on a storage device, for water monitoring are disclosed. A system includes one or more processors and one or more computer storage media storing instructions that are operable, when executed by the one or more processors, to cause the one or more processors to perform operations. The operations include determining with a leak sensor that a water leak is occurring at a property; after determining that the water leak is occurring at the property, determining that a water usage profile of a particular water consuming device matches characteristics of the water leak; based on determining that the water usage profile of a particular water consuming device matches characteristics of the water leak, identifying a water consuming device that is likely leaking; and in response to identifying the water consuming device that is likely leaking, performing a system action.