Patent ID: 8118051
Filing Date: 2012-02-21
Classification: B60K,F16K,Y10T

Abstract:
1. A valve for the ventilation circuit of a liquid tank, comprising: a) a chamber comprising a base, a side wall and an upper wall, the base of the chamber including an apertured plate that comprises openings, the openings in the apertured plate being designed to prevent significant liquid penetration during a rise of a liquid level in the tank, the side wall of the chamber including at least one opening of sufficient size and location for liquid to penetrate into the chamber; b) at least two independent ventilation orifices made in the upper wall of the chamber and connecting the chamber to the venting circuit; c) at least one orifice made in the side wall of the chamber and connecting the chamber to an inside of the tank; and d) at least two independent floats each comprising an apex capable of sealing one of the ventilation orifices, said floats: