ohjausventtiili

An ohjausventtiili, or control valve in English, is a crucial component in automated industrial processes. Its primary function is to regulate the flow of a fluid, such as liquid or gas, within a system. This regulation is achieved by adjusting the size of the opening through which the fluid passes, thereby controlling the rate of flow, pressure, or temperature.

Control valves are typically part of a closed-loop system. A sensor monitors a specific process variable, like temperature or pressure. If this variable deviates from its desired setpoint, a controller sends a signal to the actuator of the control valve. The actuator, often pneumatic, electric, or hydraulic, then moves the valve's internal element, such as a plug or ball, to change the flow rate and bring the process variable back to the setpoint.

There are various types of control valves, differing in their design and application. Common types include globe valves, ball valves, butterfly valves, and diaphragm valves. The selection of a specific control valve depends on factors such as the fluid type, required flow rate, pressure drop, temperature, and the need for precise control. Ohjausventtiilit are essential for maintaining stable and efficient operation in a wide range of industries, including chemical processing, power generation, oil and gas, and water treatment. Their reliability and accuracy directly impact product quality, energy consumption, and overall system safety.