three-dimension eccentricity multiple layers hard sealing butterfly valve


Application

1. The butterfly board sealing ring is soft and hard layer terrace sheet metal which has two advantages as metallic hard sealing and stretch sealing. It has excellent sealing feature whether in low temperature or high temperature.
2. With adopting three-dimension eccentricity structure, the valve base and butterfly board are hardly frictional and the sealing function is to be more closed more tight.
3. The sealing face of valve body adopt jig welding horniness alloy which lead to the sealing face abrasion resistant and the use life is long.
4. Particular structure, agile, laborsaving and convenient operation, effect of medium pressure is small, credible sealing feature and long service life.
High temperature and erode resistant. 


Main technology parameter:

nominal pressure
MPa
intension test
MPa
sealing test
Mpa
tryout temperature
suitable medium
1.0
1.5
1.0
≤600℃
water, steam, gas, oil, hot air, caustic medium etc.
1.6
2.4
1.76
2.5
3.8
2.75
4.0
6.0
4.4

Main structure material character:

valve body、valve board valve stem sealing face packing
cast steel, stainless steel graphite stainless steel stainless steel flexible
chrome molybdenum steel chrome molybdenum steel


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