| 摘要 |
<p>A dispensing device (1) includes a first chamber (4) that is longitudinally movable in a second chamber (5) and has an outer surface sealingly contacting an inner surface of the second chamber (5). An intermediate valve (3) is positioned between an interior part of the first chamber (4) and an interior part of the second chamber (5). The intermediate valve (3) includes a valve seat plate (7) having at least one opening (8) and a valve flapper plate (9) having at least one flap (10) for covering the at least one opening (8) in the valve seat plate (7). The at least one flap (10) moves to an open position allowing the liquid product to flow from the interior space of first chamber (4) to the interior space of the second chamber (5) when the first chamber (4) is moved in a first longitudinal direction and moves to a closed position limiting flow of the liquid product when the first chamber (4) is moved in an opposite second longitudinal direction.</p> |
