Patent ID: 8308130

Claim:
A valve comprising: a body defining at least an admission duct and an outlet duct for a fluid, wherein the body is configured to receive a valve member that is movable by means of an actuator member fastened to the body to move between a closed position closing the outlet duct and an open position allowing the outlet duct to remain open, wherein the valve member has a central portion secured to a central portion of a substantially plane diaphragm that has a peripheral portion bearing in a leaktight manner with a support element secured to the body, so as to co-operate with the support element to define a chamber, wherein the valve member and the diaphragm are pierced by an opening providing permanent communication between the chamber and the outlet duct, and wherein the diaphragm is elastically deformable and is prestressed when the valve member is in the closed position, wherein the prestress of the diaphragm itself exerts a force urging the valve member into its closed position independent of any pressure.