Patent ID: 6532983
Filing Date: 2003-03-18
Classification: B60K,F16K,Y10T

Abstract:
A system for venting a liquid tank comprising, on the one hand, a closed volume internal to the tank and equipped with a draining device which acts as a capacity intended to collect and hold any entrainment of liquid from the tank and, on the other hand, a float valve arranged in the tank, situated outside the volume of the capacity and connected to the latter by means of a duct of an air vent circuit, wherein the valve comprises means for:a) venting the tank, including when the latter is inclined with respect to the initial position for which it was designed, b) preventing liquid from being ejected from the tank in the event that the latter becomes inclined or in the event that waves of liquid are produced within the tank, c) automatically shutting off the tank in the event that the latter rolls over, thereby realizing an ROV function, d) regulating a useful volume of the tank and preventing the tank from being filled beyond a predetermined level, e) degassing the tank while it is being filled.