技术数据和性能参数Technical data and performance parameter： 公称压力：Nominal pressure: 1.0 Mpa, 1.6 Mpa, 2.5 Mpa（ANSI Class 125, 150lb） 规格：Nominal size: DN50~DN600 （2”-24”） 适用温度Suitable temperature: -40℃~180℃ 适用介质Suitable medium: This butterfly valve can be applied in various concentrations of Acid, Alkali, Aqua regia and strong chloridizing etc （except the high-temperature melting alkali metals, element fluorine & chlorine trifluoride）. 操作方式operation style: Handle, worm gear, electric, pneumatic, hydraulic. 用途Application: This butterfly valve is mainly used in petroleum, chemical, pharmaceutics, and metallurgy, coker etc corrosive pipeline circulation systems. 口径size zui高使用温度Max. working temperature zui高使用压力 Max. working pressure 试验压力Test pressure 液体Liquid 气体Gas 阀体（水压）Shell（Hydrostatic） 密封（气体）Seal（air）
