Eccentric Butterfly Valve Manufacturers

What are Butterfly Valves: Eccentric and Concentric Types?

A butterfly valve, a leading product from China in the eccentric butterfly valve manufacturers market, features a circular disc that rotates within the valve body to control flow. In an eccentric disc butterfly valve, the disc rotates around an axis that is offset from the center of the valve body. In contrast, a concentric butterfly valve has a disc that rotates concentrically, meaning the axis of rotation is aligned with the centerline of both the valve body and the pipe. Although both types are used to regulate flow, they possess distinct design characteristics.

The Features Between Eccentric and Concentric Butterfly Valves

As high-quality butterfly valves from China’s leading eccentric butterfly valve manufacturers industry, both eccentric and concentric butterfly valves offer the following features:

• Eccentric disc valves exhibit a more linear flow characteristic, ensuring consistent velocity during opening and closing, which minimizes turbulence.
• Concentric valves display a progressive flow trait where the flow rate increases non-linearly as the valve opens, resulting in higher turbulence.
• Due to the offset disc, eccentric valves can be installed in compact spaces where concentric valves might not fit between pipe flanges.
• Conversely, concentric valves have a simpler design without the additional clearance needed for the offset motion of an eccentric disc.

The Applications of Both Eccentric and Concentric Butterfly Valves

As a leading eccentric butterfly valve manufacturers manufacturer in China, we produce both eccentric and concentric butterfly valves that are extensively used in the chemical, oil/gas, power, marine sectors, and more. Examples of their applications include:
Isolation valves: Used to isolate pipes or vessels for control or drainage.
Control valves: Utilized in piping manifolds to direct flow between multiple lines.
Shut-off valves: Employed in ductwork or other areas where flow regulation is necessary under changing conditions.
Eccentric Disc Butterfly Valves:

• Ideal for throttling service where flow control linearity is crucial, such as in pumping stations, HVAC systems, and processing plants.
• Suitable for installation in tight spaces where pipe centrelines are too close together for a concentric valve to fit.

Concentric Butterfly Valves:

• Best for on/off applications where gradual filling or emptying is less critical, such as in ballast tanks or surge tanks.
• Preferred where low cost is a priority due to their simpler design that requires less precision and clearance.
• Suitable for large water transmission mains where turbulence has minimal impact due to the large pipe diameter-to-flow ratio.

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Why Choose Us

Established in 1956, TWT is located in Tianjin Binhai New Area, the heart of China’s valve production industry. We pride ourselves on our modern design standards, state-of-the-art intelligent manufacturing equipment, and advanced testing center. As an industry pioneer specializing in valve development and manufacturing, we offer a comprehensive range of products including butterfly valves, eccentric semi-ball valves, regulating valves, diamond regulating valves, exhaust valves, hydraulic control valves, and over 1000 other valve categories.