| 摘要 |
<p>The invention concerns a fluid dispensing member comprising: a body (2) defining a chamber (43); an actuating rod (5) provided with a push element (51); a piston (4) mounted on the actuating rod (5) and sliding sealed in the chamber; an inlet valve, and an outlet valve (7). The invention is characterised in that the outlet valve comprises a differential piston (7) mobile under the action of pressure exerted on the fluid product by the piston (4) countering the action of a spring (52) supported on the differential piston and on the push-button.</p> |
