The main valve spindle incorporates an inner spindle for double regulation memory stop and valve position setting.

主阀轴配置一个内轴，适用于双重调节止动记忆和阀门位置设置。

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The main valve spindle incorporates an inner spindle for double regulation memory stop and valve position setting.

主阀轴配置一个内轴，适用于双重调节止动记忆和阀门位置设置。

youdao