The indicator valve K 27751 is a vital diagnostic tool in the Sulzer ZV40/48 engine, allowing engineers to measure cylinder pressure during operation. By connecting to pressure gauges, it enables the monitoring of combustion efficiency and detection of potential mechanical issues. Built to withstand extreme pressure and temperature variations, the valve provides reliable performance in demanding conditions. Regular inspection and maintenance of the indicator valve are crucial for ensuring engine safety, performance, and long-term reliability.