阀杆的螺纹尾部始终在填料之上，防止运动时带出填料。
Stem the screw on the rear always fill in, to prevent the movement with filler.
一与外空心螺钉的盲孔道相匹配的内螺栓，内螺栓的尖端部位亦为锥形，尾部设有螺纹和供握持用的四方体。
The top part of one inner bolt which matches the blank hole channel of the outer hollow screw is also conical. The rear is provided with a thread and a tetragonal body for holding.
螺纹轴身尾部也推荐使用混合器。
A mixing section is also recommended at the end of the screw.
应用推荐