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CHECK VALVE (TWO-WAY) CONSTRUCTION/OPERATION [MZR-CD (RF Turbo)]

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• Mainly consists of positive and negative pressure valves.
• The valve moves in response to the difference in air pressure between the fuel tank side and the atmospheric side, thereby changing the path of airflow.
• When the pressure in the fuel tank becomes negative due to fuel consumption or other factors, the air path opens, drawing atmospheric air into the fuel tank.