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Welding butterfly valve.

焊接式蝶阀是一种非密闭型蝶阀，广泛适用于建材、冶金、矿山、电力等生产过程种介质温度≤300℃公称压力为0.1Mpa的管道上，用以连通、启闭

Welded butterfly valve is a kind of non-hermetic butterfly valve. It is widely used in the pipeline of building materials, metallurgy, mining, electric power and other production processes where the nominal pressure is 0.1 Mpa and the temperature of the medium is less than 300 degrees Celsius.

或调节介质量。

Or regulate the quality of media.

蝶阀按结构形式可分为偏置板式、垂直板式、斜板式和杠杆式。按密封形式可分为软密封型和硬密封型两种。软密封型一般采用橡胶环密封，硬密封型通常采用金属环密封。

According to the structural form, butterfly valves can be divided into offset plate type, vertical plate type, inclined plate type and lever type. According to the sealing form, it can be divided into two types: soft seal type and hard seal type. Rubber seals are usually used for soft seals, and metal seals are usually used for hard seals.

按连接型式可分为法兰连接和对夹式连接；按传动方式可分为手动、齿轮传动、气动、液动和电动几种。

According to the connection type can be divided into flange connection and clamp connection; according to fengji.89ix.com dianguig.89ix.com shensongji.89ix.com pinjiemen.89ix.com mianqim.89ix.com zhayoujiy.89ix.comthe transmission mode can be divided into manual, gear transmission, pneumatic, hydraulic and electric several.

工业专用蝶阀的特点能耐高温，适用压力范围也较高，阀门公称通径大，阀体采用碳钢制造，阀板的密封圈采用金属环代替橡胶环。大型高温蝶阀采用钢板焊接制造，主要用于高温介质的烟风道和煤气管道。

The special butterfly valve for industry is characterized by high temperature resistance, high pressure range, large nominal diameter, carbon steel body, metal ring instead of rubber ring. Large and high temperature butterfly valves are manufactured by steel plate welding. They are mainly used for smoke channels and gas pipes in high temperature media.