Valve provided with a stabilizing member secured to the flap and exhaust line equipped with such a valve

A valve comprising:

• a flap;
• a tubular valve body defining an exhaust gas flow passage;
• and
• a device to guide the flap relative to the valve body to allow the flap to pivot relative to the valve body around a pivot axis between a closing position and a freed position of the exhaust gas flow passage, the flap having two large faces substantially parallel to one another and connected to one another by an edge of the flap, the guiding device comprising a pin including:
• a distal end, traversed by the pivot axis, bearing against the valve body, and
• a base, which
• defines a bearing face opposite the distal end and traversed by the pivot axis, and
• has at least one slot in which the edge of the flap is received,
• and wherein the valve also comprises a stabilizing member secured to the flap, the stabilizing member having two protruding portions each protruding opposite the pivot axis relative to a respective one of the two large faces of the flap, each protruding portion being in contact with the bearing face of the pin.