The spring housing, identified by code number K 27701, is an essential part of the relief valve assembly in the Adriadiesel/Jugoturbina/Zgoda/Sulzer ZV40/48 engine. This housing encases the spring mechanism that governs the opening pressure of the relief valve. Built for durability and precise alignment, it ensures that the spring operates under optimal tension, providing consistent pressure control. A well-maintained spring housing supports accurate valve function and prevents pressure anomalies that could lead to system imbalances or component wear, making it critical for safe and efficient engine performance.