The indicator valve, identified by code K 27750, is a crucial diagnostic component within the Adriadiesel/Jugoturbina/Zgoda/Sulzer ZV40/48 diesel engine. Designed to provide direct access to the combustion chamber, this valve enables engineers to monitor internal pressure levels and assess engine performance accurately. It serves as a key tool in identifying potential issues such as pressure fluctuations, ensuring timely maintenance and optimal engine operation. Constructed from high-grade materials, the indicator valve withstands extreme temperatures and pressures, contributing to reliable engine diagnostics and operational safety.