Patent ID: 6085781
Filing Date: 2000-07-11
Classification: F16K,Y10T

Abstract:
A valve (2) comprising:a flap (3) pivoting around an axis (4) parallel to a plane (P) of the flap, which flap moves between a closed position in which one (5) of the two sides (5, 6) of said flap called the sealing side (5) closes a passage (7) for the evacuation of excess pressure, and an open position, anda means (8) for holding the flap in the closed position, which exerts a predetermined force in opposition to the force exerted by the pressure on the Sealing side (5),which valve is characterized in that;the sealing side of the flap carries a skirt (30) that extends toward the seat of the valve, while cooperating with the periphery of said seat and the skirt at a predetermined height, allowing the valve to move out of its initial position by a predetermined value while maintaining the seal, andthe holding means (8) comprises a mass (9), movable relative to the flap, which moves from an initial position to an inactive position when the flap moves from its closed position to its open position, in order to change the flap's center of gravity and thereby reduce the force exerted by the holding means (8).