Dispensing valve with venting

A resilient deformable container having a rest position and a deformed dispensing position, having a dispensing valve comprising

• an outlet for permitting an egress of fluid from the container when the container is deformed under pressure, and
• venting means for permitting an ingress of air into the container when the pressure is removed, comprising
• a resilient flange surrounding the outlet and having an opening in fluid communication with the outlet when the container is in the deformed dispensing position,
• a resilient sealing surface of the flange abutting a seating surface surrounding the outlet when the flange is in a rest position, to prevent an egress of fluid between the sealing surface and the seating surface, and
• retaining means comprising a retaining ring spaced about the flange, the retaining ring having a plurality of retaining tabs for retaining portions of the flange against the seating surface,
• whereby portions of the flange are able to deform away from the seating surface under the force of air sucked into the container as the pressure is removed and the container returns to its rest position, providing a path for the ingress of air into the container.

A dispensing valve for a resilient deformable container having a rest position and a deformed dispensing position, comprising

• an outlet for permitting an egress of fluid from the container when the container is deformed under pressure, and
• venting means for permitting an ingress of air into the container when the pressure is removed, comprising
• a resilient flange surrounding the outlet and having an opening in fluid
• communication with the outlet when the container is in the deformed dispensing position,
• a resilient sealing surface of the flange abutting a seating surface surrounding the outlet when the flange is in a rest position, to prevent an egress of fluid between the sealing surface and the seating surface, and
• retaining means comprising a retaining ring spaced about the flange,
• the flange being attached to a resilient dome having an opening biased to a closed position, wherein the dome extends toward the container in a rest position and inverts when pressure is applied to the container to allow an egress of fluid form the container under pressure,
• whereby portions of the flange are able to deform away from the seating surface under the force of air sucked into the container as the pressure is removed and the container returns to its rest position, providing a path for the ingress of air into the container.