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真空蝶阀特点：

Vacuum butterfly valve features:

1、采用中线式碟板与短结构钢板焊接的新型结构形式设计制造，结构紧凑、重量轻、便于安装、流阻小、流通量大，避免高温膨胀的影响，操作轻便。

1. Design and manufacture of a new type of structure, which is welded between midline plate and short structural steel plate. It is compact in structure, light in weight, easy to install, small in flow resistance and large in flow, avoiding the influence of high temperature expansion and easy to operate.

2、内无连杆、螺栓等，工作可靠、使用寿命长，可以多工位安装，不受介质流向影响。

2. There are no connecting rods or bolts in it. It works reliably and has a long service life. It can be installed at multiple stations, and is not affected by the flow direction of medium.

工作原理及用途：

Principle and purpose:

真空蝶阀由电动机带动驱动执行机构，使碟板在90°范围内自由转动以达到启闭或调节介质流量的目的。真空蝶阀是一种非密闭型蝶阀，广泛适用于建材、冶金、矿山、电力等生产过程中介质温度≤300℃、公称压力为0.1Mpa的管道上，用以连通、启闭或调节介质量。

The vacuum butterfly valve is driven by a motor, so that the disc plate can rotate freely within 90 degrees in order to open and close or regulate the flow of medium. Vacuum butterfly valve is a kind of non-hermetic butterfly valve. It is widely used in pipelines with medium temperature less than 300 C and nominal pressure of 0.1Mpa in the production process of building materials, metallurgy, mining and electric power. It is used to connect, open and close or regulate medium volume.

主要零件材料：

Major parts and materials:

名称   阀体、蝶板           阀轴、密封座          蝶板密封圈

Name: Valve body, butterfly plate, valve shaft, sealing seat, butterfly plate sealing ring

材料   Q235-A、F钢板    2Cr13、1Cr18Ni9Ti    三元已丙橡胶、氟橡胶

Materials: Q235-A, F steel plate, 2Cr13, 1Cr18Ni9Ti ternary propylene rubber, fluorine rubber