| 摘要 |
A valve assembly (10) comprises a valve body (20), a first valve (22a), a second valve (22b), and a manual override device (24). The valve body (20) defines a first inlet (30a), a second inlet (30b), and an outlet (32). Each valve (22a/22b) includes a plunger (68a/68b) that is electrically movable between a position whereat the corresponding inlet (30a/30b) communicates with the outlet (32) and a position whereat the inlet (30a/30b) is sealed from the outlet (32). The override device (24) is manually movable to override positions whereat the electrical control of one of the valves (22a/22b) is overridden and the plunger's seat-sealing surface (72a/72b) is caused to move so that the corresponding inlet (30a/30b) communicates with the outlet (32).
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