3 对焊式金属硬密封蝶阀

      特点及用途 Features and usage：

      本蝶阀采用三偏心多层次结构，为高温、高压、防火应用中气泡级密封的理想软、硬密封蝶阀；由于用焊接结构，

使阀门与管道平面达到*的零泄漏，此阀门无法兰，对管道保温包扎带来了很大的方便。

This butterfly valves uses three eccentric structures（to be to use multi-level or spring-loaded seal structure）,for high temperture,High-pressured,in the fire protection application the air bubble level seal ideal is soft,hardly seals the butterfly valve;Because usesThe welding structure,cause the valve and the pipeline plane achienved permanent zero divulges,this valve does not have the falngd,wrapped up to the pipeline heat preservation has brought very big convenient.

      主要零部件材料 Material for main patts：

阀体 Body:20号钢steel，WCB、CF8M、特殊材料Special material:

碟版Disc:WCB，不锈钢Stainless steel、钴基硬质合金Special material;

阀座seat:不锈钢Stainless steel、钴基硬质合金Cobalt base hard alloy;

轴套Axle sleeve:复合材料Compound material、不锈钢Stainless steel;

阀杆Stem;合金钢Alloy steel,不锈钢Stainless steel,特殊材料Special material:

      主要技术参数 Main technical parameter：

          主要外型及连接尺寸（mm）Main contour and connection size