The Duplex Control Valve Instruction Plate provides clear operating guidance for managing a duplex fuel filter control valve during normal and maintenance conditions. The plate outlines valve positions such as auxiliary run, both run, main run, and fill valve to ensure correct flow direction when changing filter elements. It explains the required sequence for replacing filter elements, including a defined minimum fill time before switching positions to prevent air entry into the fuel system, and presents step-by-step instructions directly on the equipment.Attributes:• Provides step-by-step filter element replacement instructions.• Supports safe transition between main and auxiliary filter paths.• Enhances safety by providing direct on-equipment guidance.• Consists of the aluminum background with black characters, lines, and an inner border.Applications: The Duplex Control Valve Instruction Plate is located on the duplex fuel filter control valve assembly and provides direct visual guidance for switching valve positions and performing filter maintenance.