Eccentric Butterfly Valve Design

What are eccentric butterfly valve design?

A eccentric butterfly valve design 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 butterfly valve design from China, eccentric butterfly valve design 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 butterfly valve design as isolation valves to allow pipe/vessel insulation for control/drainage. Secondly, eccentric butterfly valve design as control valves in piping manifolds to direct flow between multiple lines. Thirdly, eccentric butterfly valve design as shut-off valves in ductwork or wherever flow needs regulating in changing conditions.

Eccentric Disc Butterfly Valves:

• Throttling service to control flow where linearity is important such as pumping stations, HVAC systems and processing plants.
• Where space is constrained due to pipe centrelines being too close together to fit a concentric valve.

Concentric Butterfly Valves:

• On/off applications where gradual filling/emptying is less critical such as ballast tanks or surge tanks.
• Where low cost is a priority due to simpler concentric design requiring less precision/clearance.
• Large water transmission mains where turbulence has minimal effect due to large pipe diameter-to-flow ratio.

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Why Choose Us

TWT was established in 1956 and is located in Tianjin Binhai New Area, China’s valve production base. It has modern design standards, intelligent manufacturing equipment and testing center. It is an industry pioneer specializing in valve development and manufacturing. It mainly produces butterfly valves, eccentric semi-ball valves, regulating valves, diamond regulating valves, exhaust valves and hydraulic control valves and other 1000 categories of valves.