Excavator Engine Overflow Valve PC200-8 6754-72-1220 Pressure Limiting Diesel Engine Valve Keywords: 6754-72-1220 pressure limiting valve, PC200-8 overflow valve, Komatsu common rail pressure relief valve, excavator diesel engine spare parts 🔹Product Overview This pressure limiting overflow valve with part number 6754-72-1220 is compatible with Komatsu PC200-8 excavator diesel engine. It is installed on the common rail fuel system, used to limit the maximum fuel pressure