对夹式硬密封蝶阀该产品广泛用于石油、化工、电力、冶金、食品、医药、轻纺、造纸等行业，可安装在温度≤425℃，介质为煤气、空气、蒸汽、水、海水、油品等工业管网上作调节流量和切断介质用。

D373H硬密封对夹式蝶阀产品执行标准：
1、该产品制造和验收技术条件符合JB/T8527-97《金属密封蝶阀》标准。
2、侧法兰连接符合GB9115.6 10-88《钢制管法兰国家标准》规定。
3、结构长度符合GB12221-89《法兰连接金属阀门结构长度》中双法兰连接蝶阀短系列结构长度标准。D373H硬密封对夹式蝶阀主要零部件材料：

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