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大口径蝶阀

网络Butterfly valve of big size

大口径蝶阀

大口径蝶阀

大口径蝶阀

Butterfly valve of big size

...ng system) ... (Buffer type check valve) 防结露蝶阀 (Anti-dew butterfly valve) 大口径蝶阀 (Butterfly valve of big size) ...

1

The large-size butterfly valves used in waterworks have no any quality problems during many years .

水厂使用的大口径蝶阀，多年来产品没有发生质量问题。

2

The relevant modification on structure of valve was made ac-cording to the analysis result .

特别是根据分析结果对大口径蝶阀结构进行了相应的改进。

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