Rotary Control Valve

A Rotary Control Valve is an industrial control valve used to regulate the flow of liquids, gases, or steam. It features a rotatable, usually eccentrically mounted throttle disc which, together with a fixed counter surface, controls the cross-sectional flow area within the valve. By rotating the throttle disc through a limited angle, the flow can be continuously and accurately regulated.

Rotary control valves are typically compact in design, offer excellent control performance even at low Kv values, and provide high leak tightness when closed. They are preferred in applications that require fast response times, minimal leakage, and robust performance with abrasive or critical media.

They are commonly actuated by pneumatic or electric rotary actuators. The moving components are often sealed with spring-loaded elements or specially engineered sealing systems to ensure reliable operation even under high temperatures and pressures.

Typical areas of application include the chemical industry, power generation, oil and gas processing, and general process engineering.