| 摘要 |
<p>A valve comprises a housing (1-4) a solenoid therein and a valve element (15) movable between two seats (12, 13) in the valve. …<??>A neck (4), which is a part of the housing, is conditionally rotatable relative to the remainder of the housing and has a ventilating channel (20) leading to the atmosphere if not covered by a sealing ring (18).</p> |
