The tapered connection sleeve K 84469 is a precision-engineered coupling element used to secure the visual flow control device within the Sulzer/Adriadiesel/Jugoturbina/Zgoda ZV40/48 engine’s fluid monitoring system. Its conical design ensures a tight, vibration-resistant seal that maintains optimal visibility and prevents leakage even under fluctuating pressures and temperatures. Manufactured for durability and accurate alignment, this sleeve plays a crucial role in ensuring that operators receive clear, uninterrupted visual feedback on fluid movement, thereby improving diagnostic accuracy and enhancing operational safety.