The valve inlet and body are one integral casting assuring proper alignment of disc, seat and spindle for smooth action.

这种阀门的进口和阀体为一件式铸件，确保了阀瓣，阀座和芯轴的对齐和平稳运动。

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The general description, main points of design, technological improvements in valve body casting and test methods of the said valve are discussed.

论述球铁高压燃气闸阀的概况、设计要点、壳体浇铸工艺性的改进和试验方法。

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It was concluded that brittle fracture of the valve body was the result of poor casting quality.

结果表明，该阀体爆裂属脆性断裂，爆裂系截止阀材质、组织及铸造质量差所致。

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