螺纹旋进式阀盖：通常用于轻型管道系统和小尺寸青铜多回转阀门中。

Threaded-in bonnet is common in lighter-duty services and smaller sizes of bronze multi-turn valves.

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螺纹旋进式阀盖：通常用于轻型管道系统和小尺寸青铜多回转阀门中。

Threaded-in bonnet is common in lighter-duty services and smaller sizes of bronze multi-turn valves.

youdao