DF series butterfly’s valve gives play to the superior function in preventing forming revealing. Technology and unique multi-level more and more close contact-type valve flat that experienoe develop that utilize for many years accumulating, synthesize other multiple DF series butterfly valve of technology more and more field substitute valve, have characteristic with simple construction and having long perfor mancelife.
● Design The Characterstic
Urique multi-level advances gradually the contact type valve seat design, causes the valve board gradually to contact the valve seat in the closure process, during guarantee good sealing property,reduces the noressertial torque, thus lengthens the valve seat the servicelife.
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The ultra light aluminum alloy valve body, the torque is small;
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The usr installment is convenient, ceases the rust edipse;
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The torque reduced realizes the drive weight to be light and the miniaturization;
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Is in sole possession of the valve level packing ring prevented the fluid divulges;
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The different material quality valve seat, the adaption different operating mode,has the good anticorrosion harmoniously to seal the performance.
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The ball-and-socket valve board path causes the valve rotation to br flexible freely
The valve board is becomes according to a complete sphere processing, the packing surface each part all is a aphencal surface part, even if is valve board on, under the peak axial packing surface place is not exceptional, such packing surface when seal, although has the contact, actually is quite smooth, therefore the moment offorce reduced, the sealing property improved, specially the axial seal place friction reduced, used this technical the valve seat life to increase three times.
● Standard parameter list
类型
DF
结构长度
JIS GB API
Type
Structural length
阀门公称通径
40mm~300mm
顶部法兰标准
国际标准 SIO 5211
The valve nominal passes the diameter
Crown flange standard
GB code standard iso 5211
适用法兰标准
JIS ANSI GB
标准材质 Standard material quality
阀体:铝合金
Suitable flange specification
Valve body:Aluminum alloy
最大工作压力
1.0MPa,1.6MPa
阀板:不锈钢
Biggest working pressure
Valve board:Stainless steel
使用温度范围
-45~135℃ EPDM
密封圈:EPDM(NBR)
Application temperature scope
-12~82℃ NBR
Seal packing collar:EPDM(NBR)
泄露试验压力
1.1MP啊,1.76MPa
Divulges the test pressure
阀体试验压力
1.5MPa,2.4MPa
喷涂规格
聚酯粉体喷涂
Valve body test pressure
驱动形式
手柄式、齿轮式、气缸式、电动式
Spurts spreads the specification
Polyester powder body coating
Actuation form
Handle type,tooth wheeled,aircylinder type,electromotive type