| 摘要 |
<p>An aerosol metering valve (20) comprising: a valve body (21) containing a metering chamber (25) defined between an upper gasket (251) and a lower gasket (252); a valve member (30) that slides in leaktight manner against said upper and lower gaskets (251, 252) in said metering chamber (25); said metering chamber (25) including at least one movable element (100) that moves freely in said metering chamber (25), said at least one movable element being of shape that is substantially spherical, such as a ball.</p> |
