The complete fine regulating valve, coded K 92166, is a precision-engineered component used for controlling fluid or air flow with high accuracy in the ZV40/48 diesel engine system. Often applied in instrumentation or auxiliary systems, this valve allows fine adjustments that are essential for calibration, pressure tuning, or flow control. Its construction ensures minimal leakage, high repeatability, and resistance to corrosion and pressure fluctuations. A vital part of precise engine control, this valve contributes to overall system responsiveness and reliability.