| 摘要 |
<p>A metering valve (10) for dispensing metered doses of a pressurised product derived from a bulk supply of a pressurised product, the metering valve comprising a valve body (14), a valve stem (11), and sealing means (17,18), the valve stem (11) comprising an outlet for the pressurised product, the valve body (14) defining an internal volume (33), the metering valve further comprising a metering chamber (12), the valve stem being movable between a non-dispensing position in which the metering chamber is, in use, in fluid communication with the bulk supply of pressurised product and a dispensing position in which the metering chamber is in fluid communication with the outlet, characterised in that, in use, the bulk supply of pressurised product is wholly contained within the internal volume (33) of the valve body (14).</p> |
