| 摘要 |
An angle valve including a valve housing defining a valve chamber and having a valve opening, a driveshaft reciprocally extending into the valve chamber through a driveshaft opening, a boss extending downwardly from a top wall of the valve chamber around the driveshaft, and a bellows having a lower end mounted to the boss and an upper end mounted to the driveshaft so as to isolate the driveshaft and the driveshaft opening from the valve chamber. A method of using the gate valve is also disclosed.
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