General –For both the basic and CPVC housed stem extensions, the bottom rod coupling utilized for all ball valve extensions is fitted with turning-stops.
General –For both the basic and CPVC housed stem extensions, the bottom rod coupling utilized for all ball valve extensions is fitted with turning-stops.
一个齿轮操作机构可以容易的安装在所有阀杆加长件的外部支撑板的顶部。