Product Description
What are Butterfly Valves: Eccentric and Concentric Types?
A butterfly valve, a leading product from China in the triple 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
Quality butterfly valves from China’s triple eccentric butterfly valve manufacturers sector boast the following features for both eccentric and concentric types:
- Eccentric disc valves provide a linear flow characteristic, maintaining steady velocity during operation, thus reducing turbulence.
- Concentric valves possess a more progressive flow trait, where flow rate increases non-linearly with valve opening, leading to greater turbulence.
- The offset in eccentric valves allows for installation in tight spaces where concentric valves may not fit between pipe flanges.
- However, concentric valves are simpler in design, lacking the additional clearance required for the eccentric disc’s offset motion.
The Applications of Both Eccentric and Concentric Butterfly Valves
As a leading triple eccentric butterfly valve manufacturers manufacturer in China, we produce both eccentric and concentric butterfly valves used across chemical, oil/gas, power, marine sectors, and more. Their typical applications include:
Isolation valves: Employed to allow pipe or vessel insulation for control and drainage.
Control valves: Used in piping manifolds to direct flow between various lines.
Shut-off valves: Utilized in ductwork or other situations where regulating flow under changing conditions is essential.
Eccentric Disc Butterfly Valves:
- Perfect for throttling services where maintaining linear flow control is vital, such as in pumping stations, HVAC systems, and processing plants.
- Applicable in tight installations where pipe centrelines are too closely spaced for concentric valves.
Concentric Butterfly Valves:
- Ideal for on/off applications where gradual filling or emptying is less critical, for example in ballast or surge tanks.
- Suitable for cost-sensitive implementations due to their straightforward design requiring less precision and clearance.
- Effective in large water transmission mains where turbulence is less of an issue given the large pipe diameter-to-flow ratio.
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Why Choose Us
Founded in 1956 and situated in Tianjin Binhai New Area, the hub of China’s valve production, TWT stands out with its modern design standards, cutting-edge intelligent manufacturing equipment, and a sophisticated testing center. We are an industry leader focusing on the development and manufacturing of valves. Our extensive product lineup includes butterfly valves, eccentric semi-ball valves, regulating valves, diamond regulating valves, exhaust valves, hydraulic control valves, and over 1000 other types of valves.