A cover bearing and integral seat bearing guide the stem assembly for precise alignment with the seat.
阀盖轴承和整体阀座轴承引导阀杆总成，实现与阀座的精确定位。
Therefore, when selecting the installation position of the pump, the heat quantity of the pump cover and the bearing seat is easy to spread, and no heat accumulation phenomenon occurs.
因此选择泵的安装位置时，要使泵盖和轴承座的热量便于扩散，不出现任何蓄热现象。
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