Eccentric Disc Butterfly Valve

What are eccentric disc butterfly valve?

A eccentric disc butterfly valve comprises a circular disc that revolves within the valve body to either open or close the flow. In an eccentric disc butterfly valve, the disc rotates about an axis that is offset (eccentric) from the valve body’s center. On the other hand, a concentric butterfly valve has a disc that rotates concentrically, with the axis of rotation aligned with the centerline of the valve body and pipe. Both types are employed for flow regulation but exhibit distinct design features.

Distinguishing the Essence of Eccentric and Concentric Butterfly Valves

As a reputable supplier of fine eccentric disc butterfly valve from China, eccentric disc butterfly valve prides itself on offering a magnificent array of butterfly valves that possess remarkable features. Today, let us embark on a journey to compare and contrast two distinct types of butterfly valves – eccentric and concentric – and unveil the unique characteristics that define each:

• Eccentric Disc Valves: These valves exhibit a more linear flow characteristic, gracefully maintaining a consistent velocity as they gracefully open or close. This enchanting trait results in a reduction of turbulence, allowing for a smoother and more harmonious flow control experience.
• Concentric Valves: In contrast, concentric valves possess a more progressive flow trait, akin to the captivating rhythm of a symphony. As the valve gate opens, the flow rate increases non-linearly, creating a symphony of controlled turbulence. This unique trait offers a mesmerizing dance of flow dynamics, perfect for applications where specific flow characteristics are desired.
• Installation Advantages: Eccentric valves bestow upon us the gift of installation flexibility, particularly in confined spaces where concentric valves may struggle to find their place between pipe flanges. With the elegance of an offset disc, these valves gracefully glide into compact installations, ensuring efficient utilization of available space.
• Design Simplicity: Yet, concentric valves possess a charm of their own with their simplistic design, devoid of the additional clearance required by the offset motion of an eccentric disc. This simplicity exudes an aura of elegance, making maintenance and operation a delightful experience.

The Applications of Both Of Butterfly Valves Between Eccentric & Concentric

As quality butterfly valves for these two types, Both see wide chemical, oil/gas, power, marine and more. For instances, Firstly, eccentric disc butterfly valve is isolation valves, then it allows pipe/vessel insulation for control/drainage. Secondly, if eccentric disc butterfly valve is as control valves, it will be in piping manifolds to direct flow between multiple lines. Thirdly, when eccentric disc butterfly valve as shut-off valves in ductwork or wherever flow needs regulating in changing conditions.

Eccentric Disc Butterfly Valves:

• Throttling service: These valves are designed for precise flow control in applications where linearity is crucial, such as pumping stations, HVAC systems, and processing plants.
• Space-constrained installations: When pipe centerlines are too close together to accommodate a concentric valve, eccentric disc valves offer a practical solution due to their accommodating design.

Concentric Butterfly Valves:

• On/off applications: Concentric valves excel in applications where gradual filling or emptying is less critical, such as ballast tanks or surge tanks.
• Cost-effective solutions: With a simpler design that requires less precision and clearance, concentric valves offer a more economical option without compromising performance.
• Large water transmission mains: These valves are well-suited for large-scale water transmission mains, where the impact of turbulence is minimal due to the pipe diameter-to-flow ratio.

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Why Choose Us

TWT, established in 1956 and located in Tianjin Binhai New Area, China’s premier valve production base, embodies excellence with modern design standards, advanced intelligent manufacturing equipment, and a dedicated testing center. As an industry pioneer in valve development and manufacturing, we produce a diverse array of valves including butterfly valves, eccentric semi-ball valves, regulating valves, diamond regulating valves, exhaust valves, hydraulic control valves, and more than 1000 other categories of valves.