Double eccentric butterfly valves, also known as high-performance butterfly valves, are a type of industrial valve used to control the flow of fluids (liquids or gases) within a pipeline. These valves are designed to provide a high degree of sealing performance and control accuracy, making them suitable for a wide range of applications in various industries, including oil and gas, water treatment, chemical processing, power generation, and more.
The term "double eccentric" refers to the design of the valve's disc and shaft arrangement. In a standard or single eccentric butterfly valve, the disc rotates around a single point (the axis of the valve shaft) when opening or closing. In a double eccentric design, however, the disc is offset from the axis of the valve shaft, which creates two distinct axes of rotation. This offset or eccentricity helps improve the sealing performance and reduces wear and tear on the valve components.
Key features and advantages of double eccentric butterfly valves include:
Improved Sealing: The double eccentric design allows the valve disc to move away from the seat rapidly during the opening, minimizing friction and reducing wear on the sealing surfaces. This design enhances the valve's ability to create a tight seal, reducing the chances of leakage.
Reduced Torque: The double eccentric arrangement helps to reduce the operating torque required to open and close the valve. This makes the valve easier to operate and can lead to extended valve life.
High-Performance Characteristics: These valves are designed to handle high-pressure and high-temperature applications. They offer excellent throttling capabilities, making them suitable for precise flow control.
Versatility: Double eccentric butterfly valves can handle a wide range of fluids, including corrosive and abrasive media, making them versatile for various industrial processes.
Rapid Opening and Closing: The design allows for quick response times when opening or closing the valve, which can be crucial in emergency situations.
Durability: The design reduces friction and wear, leading to increased durability and longer service life compared to standard eccentric or concentric butterfly valves.
Lower Maintenance: The improved sealing and reduced wear contribute to lower maintenance requirements and longer intervals between servicing.
|Double Eccentric Butterfly Valves Specification|
|Size Range||80 mm to 3800 mm|
|Material of Construction||Cast Iron/Ductile Iron/2 % NICI/DI Ni Resist (D2Ni)
Cast Steel/Fabricated Steel/Duplex
|Pressure Rating||PN 0.6, PN 1.0, PN 1.6, PN 2.0
PN 6, PN 10, PN 16, PN 20
Class 25, 75, 150, 250
|Temperature:||-30°C to 200°C|
|seat/lining:||Replaceable / Bonded /vulcanized Liner NBR/EPDM/VITON, full lined PTFE/PFA|
|Duplex Steel Double Eccentric Butterfly Valve Price||$ 95.20 - $ 135|
|Buy Double Eccentric Butterfly Valves Best Price||$ 78.12 - $ 80|
|High Performance Double Eccentric Butterfly Valves Price||$ 22.91 - $ 35|
|Stainless Steel Double Eccentric Butterfly Valve Best Price||$ 72.55 - $ 32|
|Super Duplex Steel Double Eccentric Butterfly Valve Price||$ 48.17 - $ 55|
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|Double Eccentric Butterfly Valve Stockist in India||LTCS Double Flanged Concentric Type Butterfly Valves|
Oil & Gas Industry
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