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> 关于阀门安装要求的表述，正确的有(　　)。 A 阀门手轮不得向下，避免仰脸操作 B 落地阀门手轮朝上，不得歪斜 C 明杆闸阀不要安装在地下，以防腐蚀 D 在工艺允许的前提下，阀门手轮宜位于齐胸高，以便于启阀 E 与阀门连接的法兰应保持平行，其偏差不应大于法兰外径的0．25％

问题：

发布时间：2024-09-08

关于阀门安装要求的表述，正确的有(　　)。

A

阀门手轮不得向下，避免仰脸操作

B

落地阀门手轮朝上，不得歪斜

C

明杆闸阀不要安装在地下，以防腐蚀

D

在工艺允许的前提下，阀门手轮宜位于齐胸高，以便于启阀

E

与阀门连接的法兰应保持平行，其偏差不应大于法兰外径的0．25％

参考答案：

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