| 摘要 |
<p>Valve substantially comprised of a rigid cup (1) and a flexible and elastic shutter (2) comprising two valves (6, 14) co-operating with seats (7, 22) formed by the cup. When filling the container by pressure injection of product through the valve, the shutter (2) is extended and the two valves (6, 14) are opened whereas, during the dispensing, by limited extension of the shutter under the effect of a manual pressure exerted on a tail pusher-diffuser (11) inserted in the shutter, only the first valve (6) is opened ensuring a communication between a product-supplying plunger tube (23) carried by the shutter (2) and the outlet (5) of the valve. An additional gas tap (19) may be pierced into the second valve (14).</p> |
