Soft Seal Butterfly Valve is a kind of butterfly valve in which one side of the sealing vice is metallic material and the other side is elastic non-metallic material. Soft seal butterfly valve is used to realize the pipeline system cut off and flow control, commonly used in petroleum, chemical, metallurgy, hydropower and other fields. However, due to the special characteristics of the material, it is not suitable for high temperature environment.
Soft Seal Butterfly Valve Specification
Main material: cast steel, stainless steel, chromium-molybdenum steel, alloy steel, duplex stee
Product specification: DN50-2000mm
Pressure class: PN0.6 - 4.0mpa
Applicable medium: air, water, steam, gas, oil, acid, alkali, salt with weakly corrosive medium, etc
Applicable temperature: Carbon steel: -29℃~425℃ Stainless steel: -40℃~600℃
Driving mode: worm drive, pneumatic drive, electric drive, hydraulic drive
Soft Sealing Butterfly Valve
Differences between soft seal butterfly valve and hard seal butterfly valve in structure
1. Difference in structure
Soft seal butterfly valves are mostly centerline, hard seal butterfly valves are mostly single eccentric, double eccentric, tri-centered butterfly valves.
2. Temperature resistance
Soft seal is used in normal temperature environment. Hard seal can be used for low temperature, normal temperature, high temperature and other environments.
3. Pressure
Soft seal low pressure - normal pressure, hard seal can also be used in high pressure and other working conditions.
4. Sealing performance
Soft seal and three eccentric hard seal butterfly valve sealing performance is better three eccentric butterfly valve in high pressure and high temperature environment can maintain a good seal.
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