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1·The microcomputer controlled test stand 701 adopts power stepping motor to drive the original operating valve to carry out tests.

此种微机控制701试验台，是采用功率步进电机驱动原操作阀进行试验的。

2·Comments: a simple preventative maintenance program and good operating procedures can address and limit the disadvantages of this valve.

评论：一个简单的预防性的维护程序和良好的操作程序能够限制这种阀门的缺点。

3·Recommended Closing Procedure: Close the cylinder valve tightly using a gloved hand. Always wearing gloves when operating cylinder valves. NEVER use wrenches or other persuaders to operate the valve.

推荐的关闭程序：用戴手套的手紧紧地关闭阀门。推荐操作钢瓶阀门时总是戴手套。禁止用扳手或其它强制性的工具来操作阀门。

4·If the valve body material can be welded, but very different thermal expansion coefficient, or changes in operating temperature range of a larger thread junction closure weld must be honey.

如果阀体的材料是可以焊接的，但膨胀系数差异很大，或者工作温度的变化幅度范围较大，螺纹连接部必须进行蜜封焊。

5·In some sectors certain operating conditions (such as the petroleum sector, pipeline), not allowed to use the path contraction of the valve.

在某些部门的某些工作条件下(如石油部门的输油管线)，不允许采用通径收缩的阀门。

6·Output torque of the actuator must meet or exceed the operating torque requirements of the specific valve to be actuated.

执行机构的输出扭矩必须满足或超过所应用阀门所需的操作扭矩要求。

7·This article introduces the structure, operating principle and key matching points of secondary air valve.

本文阐述了二次空气阀的结构、工作原理和匹配要点。

8·DIAPHRAGM, A flexible part for operating a valve mechanism by pressure.

隔膜， 用气压或液压操作的活门机构中的柔性部件。

9·The overflow valve is used to protect the machine and the safety of the operating personnel, must not be arbitrary adjustment.

溢流阀是用来保护机器和操作人员的安全的，不得任意调整。

10·This means that the operating mechanism must be able to move sufficiently far enough away from the valve to allow the valves to be fully closed against its seat by the valve spring.

这意味着操作机构必须离阀门足够远以允许阀门通过气门弹簧使其完全关闭。