The main reasons for using triple eccentric butterfly valves include its excellent sealing performance, low operating torque, long life, wear and corrosion resistance, and wide application adaptability.
1. Excellent sealing performance
Zero leakage design: The triple eccentric butterfly valve uses three eccentric designs (valve shaft eccentricity, valve shaft and valve body channel eccentricity, valve seat and valve body channel angle eccentricity) to make the butterfly plate quickly disengage and contact with the valve seat when opening and closing, achieving zero leakage.
Bidirectional sealing function: The valve seat and butterfly plate sealing surface are completely symmetrical, which can achieve effective sealing in both positive and negative directions, and is suitable for working conditions with bidirectional medium flow.
2. Low operating torque and efficient opening and closing
Reduce friction: The triple eccentric design makes the butterfly plate frictionless with the valve seat during the opening and closing process, and the operating torque is significantly reduced, and the opening and closing is fast and labor-saving.
Energy saving and high efficiency: Low operating torque reduces the energy consumption of the drive device, which is suitable for large-caliber and high-pressure differential working conditions.
3. Long life and low maintenance cost
Wear resistance: There is no direct friction between the butterfly plate and the valve seat during the opening and closing process, which reduces wear and extends the service life of the valve.
Self-lubricating design: Some three-eccentric butterfly valves adopt metal hard seal structure, which does not require lubrication and has low maintenance cost.
4. High temperature resistance, corrosion resistance and wear resistance
High temperature adaptability: The metal hard seal structure can withstand high temperature media (such as steam, hot oil) and is suitable for high temperature conditions.
Corrosion resistance: The valve body and butterfly plate materials can be made of corrosion-resistant materials such as stainless steel and Hastelloy, which are suitable for corrosive media.
Wear resistance: The sealing surface is made of surfacing carbide or hardened, which has strong wear resistance and is suitable for medium containing particles.
5. Wide application adaptability
Multi-industry application: It is widely used in petroleum, chemical, electric power, metallurgy, food, medicine and other industries to meet the needs of different working conditions.
Multi-media applicability: It can handle a variety of fluids such as water, steam, oil, gas, corrosive media, etc.
Multi-condition coverage: Suitable for extreme working conditions such as high temperature, high pressure, vacuum, low temperature, and frequent opening and closing.
