Air vent valve for integrated balancing volume of fuel tank of motor vehicle, is attached in balancing volume within upper region of tank internal space, and has valve shutter that is closed in vertical direction against force of gravity

摘要

The air vent valve (1) is attached in a balancing volume within an upper region of a tank internal space. The air vent valve has a valve shutter (2) closed in a vertical direction against the force of gravity. A closing motion of the valve shutter or a float gauge (3) is damped by a damper (5).