Control Valve Manufacturer
A control valve is a valve used to control fluid flow by varying the size of the flow passage as directed by a signal from a controller. It is automatic. This enables the direct control of flow rate and the consequential control of process quantities such as pressure, temperature, and liquid level. Control valves are used in oil and gas production to controls the flow of liquid or gas.
The opening or closing of automatic control valves is usually done by electrical, hydraulic or pneumatic actuators. Normally with a modulating valve, which can be set to any position between fully open and fully closed, valve positioners are used to ensure the valve attains the desired degree of opening.