| 摘要 |
A fluid dispenser and dispensing valve are described, and wherein the dispensing valve includes a valve housing having a wall which defines an internal cavity, and wherein a passageway is formed through the wall of the valve housing; a valve control element is provided and which has a deformable sidewall which is placed within the valve housing in one of a plurality of possible configurations. At least a portion of the sidewall of the valve control element deforms when a vacuum is created in the internal cavity of the valve housing so as to facilitate the controllable delivery of a fluid into the valve housing. The sidewall of the valve control element has a variable thickness dimension. |
