对夹式蝶阀是当前国内外积极采用的一种新型阀门,它具有结构紧凑、体积小、重量轻、操作省力、阻力小、密封性好、工作可靠等特点。但由于目前国内生产的蝶阀,工作温度、压力较低、不能在热网管道上使用。为此,城乡建设环境保护部下达了研制高温蝶阀的科研项目,经过北京市热力公司修配厂和航天工业 The wafer type butterfly valve is a new type of valve that is actively used at home and abroad. It has the characteristics of compact structure, small size, light weight, low effort, small resistance, good sealing, and reliable work. However, due to the current domestic production of butterfly valves, the operating temperature and pressure are relatively low and cannot be used on hot-mesh pipes. To this end, the Ministry of Urban and Rural Development and Environmental Protection issued a scientific research project for the development of high-temperature butterfly valves.