To order, specify description and extension length from center line of valve to top of handwheel or nut.
订购时，注明描述信息和从阀门中心线至手轮顶部或螺母的加长长度尺寸。
Beneath the handwheel is one set of wrench flats on a nut threaded into the valve body. This is the diaphragm-retaining nut.
在手轮下面，在一个旋进阀体的螺母上面是一套扳手面。这是横膈膜止动螺母。
Rotate the handwheel driving the pole and nut reciprocate in horizontal. At the same time the seal can prevent dust from entering driving body and out-leakage pollution does not exist.
转动手轮使丝杆带动丝杆螺母和闸板沿水平方向往复运动，达到闸门的启闭目的，同时密封副在闸板运动中阻拦粉尘不进入传动腔内，无外漏污染。
Beneath the handwheel is one set of wrench flats on a nut threaded into the valve body.
在手轮下面，在一个旋进阀体的螺母上面是一套扳手面。
It is mainly made up of frame, gate board, screw pole, nut etc. Rotate the handwheel by hand, then the screw pole drives the nut gate board move in horizontal to fro to open close the valve.
主要由框架、闸板、丝杆、螺母等零件构成，用手转动手轮使丝杆带着丝杆螺母和闸板沿水平方向往复运动，达到闸门的启闭目的。
It is mainly made up of frame, gate board, screw pole, nut etc. Rotate the handwheel by hand, then the screw pole drives the nut gate board move in horizontal to fro to open close the valve.
主要由框架、闸板、丝杆、螺母等零件构成，用手转动手轮使丝杆带着丝杆螺母和闸板沿水平方向往复运动，达到闸门的启闭目的。
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