A valve control assembly includes a valve body having an inlet adapted to be coupled to a source of process fluid having a first temperature, an outlet, and a fluid flow path extending between the inlet and the outlet, and a bonnet coupled to the valve body. An inlet port, an outlet port, an annular plenum, an inlet passage, and an outlet passage are integrally formed in the valve body or the bonnet. The inlet port is adapted to be coupled to source of media and the annular plenum is disposed between the inlet port and the outlet port, immediately adjacent a portion of the fluid flow path. The inlet passage directs the media from the inlet port to the annular plenum, which changes a temperature of the process fluid flowing through the fluid flow path from the first temperature to a second temperature different from the first temperature.

A flow control smart valve and a flow control system using the same, including an opening/closing unit disposed inside a flow path and selectively passing a fluid, and a drive unit coupled with the opening/closing unit to control a position of the opening/closing unit in the flow path.

An assembly for pressure testing of components, such as a valve of an HVAC system. The assembly includes a hand truck, a tank and a housing mounted on the base of the hand truck. A control unit is encased within the housing and coupled to a solenoid, wherein the solenoid is coupled to a valve. The valve connects a pressure regulator of the tank to the component. The control unit can receive instruction from an external device at a safe distance from the assembly, and upon receiving the instruction, the control unit can actuate the solenoid to open the valve.

A valve configured to control a flow of a process fluid includes a pair of packing seals separated by a seal gap space along a linear valve stem of the valve, and a pressurization port that can be used to apply a pressurizing fluid, such as nitrogen gas, to the seal gap at a gap pressure that is higher than the process fluid pressure, thereby ensuring that any leakage past the packing seals will be of pressurizing fluid into the process fluid and/or into the environment, and that no process fluid will escape into the environment. The pressure or flow rate of the pressurizing fluid can be monitored to detect and quantify any pressurization fluid leakage past either of the packing seals, so that a maintenance action can be applied to the valve, such as re-tightening or replacing at least one of the packing seals, or replacing the valve.

Automatic testing for control valves is provided for diagnosing of actuators, including actuators not equipped with analog or discrete position transmitters. A valve controller confirms steady-state conditions for a turbo-compressor system that includes a control valve in a first position and sends, to an actuator for the control valve, a signal to initiate a partial valve stroke to move the control valve away from the first position. The valve controller receives feedback signals from sensors in the turbo-compressor system and monitors the feedback signals for a change from the steady-state conditions. When the monitoring detects a change from the steady-state conditions within a defined time period, the valve controller sends, to the actuator, a signal to return the control valve to the first position. When the monitoring does not detect a change from the steady-state conditions within the defined time period, the valve controller generates an alarm signal.

For determining the operability of a fluid driven safety valve, a method comprising the following steps is described: A partial stroke test is performed on the safety valve, resulting in a stroke-pressure curve. The stroke pressure curve is extrapolated (330, 340) beyond the measured range (360) up to the safety closing position (350). From the extrapolated stroke-pressure curve, the closing pressure reserve (320) can be determined. In this way, the functionality of the safety valve can be checked during operation.

An actuator of an environmental control system of a building including a motor and a drive device driven by the motor and configured to drive a valve within a range of positions. The actuator includes one or more printed circuit boards including one or more processing circuits configured to obtain a raw measurement data set from transducers and generate a flow signal based on the raw measurement data set. The flow signal indicates a flow rate of a fluid through a conduit. The one or more processing circuits are configured to determine an actuator position setpoint based on a flow rate setpoint and the flow signal and operate the motor to drive the drive device to the actuator position setpoint. The motor, the drive device, and the one or more printed circuit boards are located within a common device chassis.

Provided are a button, a display device, a shower control device and a control method thereof. The display device displays a first parameter represented by a number and comprises seven display sections that form a rectangular divided by horizontal bars to display characters. The seven display sections are horizontally arranged display sections a, g, d from top to bottom, respectively, and are vertically arranged display sections f, b, e, c respectively, wherein the display sections f, b, e, c are arranged at the upper left, upper right, lower left and lower right of the display section g, respectively. The display device is further used for displaying a second parameter represented by a progress bar.

A valve arrangement (10) for industrial automation, including at least one pneumatic valve module (4) with a module housing (5), the valve module (4) having a working port (2), an electric drive device, and at least one actuator element (6) which is arranged in the module housing (5), can be positioned, in particular proportionally, by means of the electric drive device and via whose position a valve module output pressure at the working port (2) and/or a flow rate through the working port (2) can be set, wherein the valve module (4) further has a valve module pressure sensor (7) for detecting the valve module output pressure, the valve arrangement (10) further including a diagnostic device (8) which is configured to provide a diagnostic function on the basis of the detected valve module output pressure, the diagnostic function including a failure prognosis of the valve module, a compressed air leakage detection, a compressed air consumption detection and/or a compressed air consumer localization.

Calibration of a valve in a vacuum system and providing a diagnostic indication in the vacuum system using the calibration includes measuring conductance of the valve as a function of angular valve position and generating a conductance calibration map or function for use during operation of the valve. An actual angular valve position is set based on the received set point angular valve position and a difference between the measured valve conductance and a predefined metric of conductance versus angular valve position. An actual system conductance and a difference between the actual system conductance and a reference system conductance for the system are determined. The diagnostic indication of a fault in the system is generated based on the actual angular valve position of the valve and the difference between the actual system conductance and the reference system conductance for the system.