A control valve is a mechanical device used to regulate the flow of fluids within a system, ensuring precise control over parameters such as pressure, temperature, and fluid levels. Typically found in industrial processes, HVAC systems, and water management applications, control valves can be operated manually or automatically through electronic or pneumatic actuators. They come in various types, including globe, ball, and butterfly valves, each suited for specific flow control needs. By adjusting the valve's opening, operators can maintain desired conditions within a system, improving efficiency and safety. Control valves play a crucial role in optimizing system performance, reducing energy consumption, and preventing equipment damage by ensuring that fluids flow at the appropriate rates and pressures.