| 摘要 |
A dispensing valve (10) has a stop (20). The valve (10) has a surface (28) defining an opening (30). The stop (20) is adapted to be moveable between a first position abutting the surface (28) to seal the opening (30) and a second position spaced from the surface (28) to open the opening (30). The stop (20) is formed in an injection-molding process and has a base (52) adapted to be connected to the valve (10). A sealing member (54) is connected to the base (52) by a hinge member (60). The sealing member (54) has a frustoconical outer surface (62) and a sealing surface (66) at a distal end thereof. The sealing member (54) extends away from the base (52) in a first molded position (MP) wherein the sealing surface (66) faces generally away from the base (52). The sealing member (66) is foldable at the hinge member (60) to a second position (FP) wherein the sealing surface (66) faces generally towards the base (52). A portion of the sealing member (54) is adapted to pass through the opening (30) wherein the sealing surface (66) is adapted to abut the valve surface (28). The method of making the valve stop (20) is also disclosed. |
