| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a system for overcoming the defects of known ventilation systems by avoiding the arrangement of a container in a pipe outside of a tank, discharging a liquid held in the container when a liquid level in the tank is lowered, allowing adaptability to the severest environmental standards and causing no excessively high and low pressure in the tank. SOLUTION: The system is a combination of a float for ventilating a fuel tank, capable of ventilation at an inclined position, preventing the spout of a liquid and achieving OPD and ROV functions and gas exhaust function during filling, and a container provided with a discharge system for trapping a few amount of liquid carried along with gas and returning the liquid to the tank.</p> |
