AirDog Fuel System Index

The Original AirDog® Fuel Preporator® removes various contaminates, including entrained air/vapor, particulates and moisture, and removes excess fuel not needed by engines, allowing the fuel to flow through the regulator and return to the fuel tank. Once the lift pump separates the air/vapor it enters the return port after the regulator, allowing pure fuel to flow to the engine at a regulated positive pressure.