3 對焊式金屬硬密封蝶閥

      特點及用途 Features and usage：

      本蝶閥采用三偏心多層次結(jié)構(gòu)，為高溫、高壓、防火應(yīng)用中氣泡級密封的理想軟、硬密封蝶閥；由于用焊接結(jié)構(gòu)，

使閥門與管道平面達到*的零泄漏，此閥門無法蘭，對管道保溫包扎帶來了很大的方便。

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：

閥體 Body:20號鋼steel，WCB、CF8M、特殊材料Special material:

碟版Disc:WCB，不銹鋼Stainless steel、鈷基硬質(zhì)合金Special material;

閥座seat:不銹鋼Stainless steel、鈷基硬質(zhì)合金Cobalt base hard alloy;

軸套Axle sleeve:復(fù)合材料Compound material、不銹鋼Stainless steel;

閥桿Stem;合金鋼Alloy steel,不銹鋼Stainless steel,特殊材料Special material:

      主要技術(shù)參數(shù) Main technical parameter：

          主要外型及連接尺寸（mm）Main contour and connection size