The threaded union with code number K 84468 is a precision-engineered connector used in the visual flow control system of the Sulzer ZV40/48 engine. It enables secure and leak-free joining of flow monitoring components, allowing operators to observe and assess fluid movement within the system. Designed for high-pressure environments, the union features durable threads and sealing surfaces to ensure long-lasting reliability. This small but essential part supports effective maintenance and diagnostics, making it indispensable in complex fuel, oil, or coolant monitoring setups.