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阀门阀

阀门阀

阀门阀

阀门阀

1

Frequent temperature fluctuations expose the valve to excessive stresses which cause surface cracks in the body bores of cast steel valves.

频繁的温度波动使阀门承受着过度的压力，这种压力容易造成铸钢阀门阀体孔内部表面裂缝。

2

Valve running thrust which represents 90% of the travel of the valve stem can be determined by adding stem load and stem packing friction .

阀门运行推力只是阀门阀杆行程力的 90%，因此测算阀门推力时，要加上阀杆负载和阀杆填料摩擦力。

3

DIRECTION OF CLOSURE FOR COCKS AND VALVES (SLUICE VALVES , SCREW DOWN VALVES, ETC. ).

阀门关闭方向（闸板式阀门，阀式开关等）

6

Valves - Materials for bodies, bonnets and covers - Part 2 : steels other than those specified in European Standards.

阀门 .阀体、阀盖和阀套用材料 .第2 部分：欧洲标准中没有规定的钢

8

10

To lose control of the valve material , valve shaft from stainless steel ANSI420.

用于输料管的阀门，阀轴由 ANSI420 不锈钢制造。

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