Abstract: A safety valve for a circuit for ventilating a liquid tank, preventing liquid from being entrained and comprising a casing which opens out inside the tank under the upper wall of the latter and the upper part of which is connected to the ventilating circuit by means of an orifice, including:a) a needle capable, in the high position, of shutting off the orifice located in the head of the valve;b) a float associated with the needle and capable of sliding vertically inside the casing;c) structure for supporting the float and for displacing the said float upwards in the event of an inclination of the casing;d) a stem extending the lower part of the casing inside the tank under the means for supporting and displacing the float.

Abstract: Filling adaptor for a fuel tank, including a tubular body having a first open end communicating upstream with the filling orifice and a second open end communicating downstream with the filler pipe, the tubular body comprising downstream an internally frustoconical final portion whose cross-section decreases in the downstream direction, the cone vertex angle of which is no greater than 10.degree. and the smallest internal diameter of which is equal to or slightly greater than the external diameter of the spout of the filler nozzle.