| 摘要 |
<p>The valve device has a housing (3) with apertures (4,5,6) communicatable with conduits (7) in a cylindrical valve body (1). An annular sealing means (9) is an integral piece constituted by a disc having a central aperture (10) and at its head wall remote from the housing bore (2) a flexible lip (11) extending axially of the valve body (1). The sealing means may be made from a polyamide.</p> |
