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.

A spring return hydraulic or pneumatic valve is actuated, by an actuator, from a first position to a second position. A displacement of the valve is measured. A hydraulic or pneumatic pressure of the valve actuator is measured. A spring constant of the spring is calculated based on the measured displacement and the measured pressure. The calculated spring constant is compared with a manufacturer listed spring constant.

A stick slip detection system includes: an operation data storage unit configured to store a stick slip index, the stick slip index being a ratio of a first state amount based on a displacement of a valve shaft of a valve to be diagnosed to a second state amount based on the displacement; an abnormality diagnosis unit configured to determine whether a stick slip phenomenon occurs in the diagnosis target based on the stick slip index; and a diagnosis operation control unit configured to, when a stepwise change in a control command value in an intermediate opening degree of the valve to be diagnosed is detected, stop a determination operation of the abnormality diagnosis unit. The present disclosure makes it possible to easily reflect knowledge of an expert with respect to a diagnosis target such as a valve in the stick slip detection system and method.

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.

Techniques for correlating changing hydraulic pressure differentials with interval control valve (ICV) movements are contemplated. In some aspects, the disclosed technology includes include methods for applying, by a surface controller, a series of differential pressure values to a hydraulic-open line, receiving, from a position sensor, a corresponding valve position for each of the differential pressure values, and calculating a lag time, a move speed and a response delay for each of the first series of differential pressure values. In some aspects, the method can further include steps for generating an ICV positioning model based at least in part on the lag time, the move speed, and the response delay calculated for each of the first series of differential pressure values. Systems and computer-readable media are also provided.

A system includes a gas distribution network having sub-networks including a first sub-network, each sub-network including a pipe section having a gas safety device coupled to a gas safety valve. The gas safety device includes a pressure sensor, a shut off controller configured to shut off the gas safety valve, a computing device, and a communications module. A server is communicably coupled to the communications modules of the gas safety devices for that implements artificial intelligence (AI) which based on a current threat condition to the gas distribution network determines affected sub-networks. The server is for sending of a valve closing instruction signal to the gas safety device in the first sub-network during the current threat condition when the current threat condition is determined to affect the first sub-network. Responsive to the valve closing instruction signal, the gas safety device shuts off the gas safety valve in the first sub-network.

A check valve includes an upper housing defining an inlet of the check valve, and a lower housing having a seating portion and defining an outlet of the check valve. The check valve further includes a chamber interposed between and defined by the upper and lower housings for fluidly connecting the inlet and the outlet, and a flexible diaphragm mounted in the chamber. The flexible diaphragm selectively permits fluid flow in a first direction, and prevents fluid backflow in a second direction opposite to the first direction. The flexible diaphragm includes a color changing material, and when the flexible diaphragm is seated on the seating portion and bent due to force of the fluid flowing in the first direction, the flexible diaphragm exhibits a color change.

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.

An apparatus comprises a mounting panel including a top plate having multiple vias and multiple orifices. An internal face of the top plate includes a first cut-out region and channels through which to flow a process fluid. The first cut-out region can be a reservoir in which to contain the process fluid. The multiple vias are adapted for passing the process fluid through the top plate. The multiple orifices are adapted for attaching a plurality of process fluid control components to the mounting panel. An inner plate also has multiple additional vias. The apparatus includes a bottom plate, where the inner plate is compacted between the top plate and the bottom plate to form an integral metallic body in which to contain and flow the process fluid.

A device for measuring a state of a valve may include a housing configured to connect to a handle of a valve or a body of a valve, a sensor supported on one of the housing or the valve stem, and an indicator detectable by the sensor. The indicator may be configured to move relative to the sensor in response to movement of a valve stem or valve handle during opening and closing of the valve. The sensor may be configured to detect a position of the indicator to determine a state of the valve. Related systems and methods are also described.