| 摘要 |
An electrically operated valve having a valve body in which a valve member is mounted for movement to an open or closed position, an operating assembly being removably mounted on the body and including a heat motor that is offset with respect to the axis of the valve member and that is operable to effect movement of the valve member against the action of a control spring as also mounted in the operating assembly, the heat motor having a thermal switch mounted directly thereon for controlling current to the heating element thereof and thereby protecting the heat motor for increased life thereof.
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