CPVC housed stem extensions are not intended for the horizon ball valve series.
CPVC封装的阀杆加长件并不用于水平球阀系列。
Stem extensions can BE furnished to permit remote operation of butterfly valves in any required length.
配备所需长度的阀杆延长件，可以对某个蝶阀进行远程操作。
The extension includes handwheel, non-rising stem, fittings and extensions to allow remote operation normally from above.
加长件包括手轮，暗杆，连接件和加长件，允许在上方进行远程操作。
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