Control Valve

Didtek Control Valve is a critical part of the control loop. The control valve manipulates a flowing fluid, such as gas, steam, water, or chemical compounds to compensate for the load disturbance and keeps the regulated process variable as close as possible to the desired set point.

Linear Motion Control Valve

Didtek Control Valve manufacturer according to ASME B16.34,IEC60534.Application: Petroleum Chemical Industry,Steel,Metallurgy.

3-Way Globe Control Valve

3-Way Globe Control Valve Applicable Standards:Control valve, Standard: ASME B16.34 IEC60534 Face to Face: ISA-75.03-1992

Pressure regulating valve type self regulated,

Pressure regulating valve type self regulated, Control valve, Standard: ASME B16.34 IEC60534, Face to Face: ISA-75.03-1992

Bare stem Straight Through Pattern Control Valve

Bare stem Straight Through Pattern Control Valve Standard: ASME B16.34 IEC60534， Face to Face: ISA-75.03-1992

Characteristic

There are various types of control valves, and their applicable occasions are different. Therefore, the type of control valve should be reasonably selected according to the requirements of the process production process.

Pneumatic control valves are divided into air-to-open and air-to-close. The air-to-open control valve is closed in a fault state, and the air-to-close control valve is opened in a fault state. Some auxiliary equipment can be used to form a position protection valve or to make the control valve self-locking, that is, the control valve maintains the valve opening before the failure when the failure occurs.

Air-to-open and air-to-close methods can be achieved through the combination of positive and negative actuator types and positive and negative valves. When using a valve positioner, it can also be realized through a valve positioner.

Various control valves have different structures and have their own characteristics.

What Is A Control Valve?

A control valve is a power-operated used to regulate or manipulate the flow of fluids, such as gas, oil, water, and steam.
It is a critical part of a control loop and is an example of a final control element. The Control Valve is by far the most common final control element used in industry today.

What Are The Actuators Of The Control Valve?

A control valve can be operated electrically, pneumatically, or hydraulically.
A control valve receives a signal from a controller such as a PLC in order for it to move resulting in a change in flow.
Because the PLC signal is electrical, the control valve may require a device to convert that electrical signal so that it can operate.

What are Control Valves used for?

Control Valves are used to regulate the flow of steam, water or other fluids to maintain a process such as heating water with steam or cooling down a process using chilled water. They are only one component of a control loop and they rely on other components for proper function (i.e. controller, sensor, transducer, etc.). When properly installed and set-up with appropriate control loop components, these valves provide extremely accurate control.