蒸汽，水，油和气。所有美国尼必可铸铁阀体阀门的标准配置，除了特别指定以外。

Steam-Water, Oil, and Gas. Standard on all NIBCO Iron Body Valves unless otherwise specified.

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结果表明，断裂是由腐蚀疲劳引起的，阀体材质不舍格和焊接结构不合理是主蒸汽管失效的主要原因。

The results shown that the rupture is caused by corrosion fatigue. The main reasons of failure of main vapour tube are unqualified valve material and unreasonable welded construction.

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注意：所有阀体带固定承插连接端口的阀门必须安装在开阔的地方，使得粘固剂蒸汽能够顺畅蒸发而不会损坏内部部件。

CAUTION: all valves with fixed socket end connectors in the body must be installed in the open position to aid in evaporation of solvent vapors which can attack internal components.

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