| 摘要 |
This device comprises a diaphragm valve consisting of a part forming the valve seat, in which a duct for the flow of the product contained in the container is formed, and of a diaphragm made of elastically deformable material closely fitted onto this part.According to the invention:the part has a conical or cylindro-conical overall shape and has a cross section which increases toward the orifice via which the product flows out of the valve;the diaphragm has a conical or cylindro-conical overall shape corresponding to that of the part, this shape being such that this diaphragm can be fitted closely onto or into this seat-forming part, andthe diaphragm and the container comprise bearing part so as to hold the diaphragm in its position of close fitting onto or into the part.
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