säätökuulaventtiilit

Säätökuulaventtiilit, known in English as control ball valves, are a type of industrial valve used for regulating flow rates in a fluid system. Unlike simple on-off ball valves, control ball valves are designed with a specifically shaped ball and seat assembly to provide precise throttling or modulating capabilities. The shape of the port in the ball, often V-port or parabolic, allows for non-linear or linear flow characteristics, depending on the application's requirements. This precise control is crucial in processes where maintaining a specific flow rate is essential for product quality, safety, or efficiency.

These valves typically feature a quarter-turn operation, meaning the handle or actuator moves the ball 90 degrees to change the flow. The ball itself has a hole or port through it. When the port is aligned with the pipeline, the valve is fully open, allowing maximum flow. As the ball is rotated, the port moves out of alignment, gradually restricting the flow. The customized port shapes ensure that the relationship between the valve opening and the flow rate is predictable and controllable.

Control ball valves are widely used in industries such as chemical processing, oil and gas, water treatment, and power generation. They are employed in applications like controlling the flow of reactants, regulating steam, managing cooling water, and maintaining precise pressure levels. Their robust construction and ability to handle a wide range of pressures and temperatures make them a versatile choice for demanding industrial environments. Actuation can be manual via a handle, or automated using electric, pneumatic, or hydraulic actuators for integration into control systems.