Double Eccentric Butterfly Valve Suppliers China
- Water, Oil, Gas And Various Corrosive Media
- Pn1.0～1.6mpa(Concentric Butterfly Valve), PN0.6～2.5MPa(Eccentric Butterfly Valve)
- 50 Years
- Valve Plate as Stainless Steel；ductile Iron
Product Description
What are Butterfly Valves: Eccentric and Concentric Types?
A butterfly valve from China’s leading supplier in the double eccentric butterfly valve suppliers china industry contains a circular disc that rotates to control flow within the valve body. An eccentric butterfly valve has a disc that rotates on an axis offset from the valve body’s centerline. In comparison, a concentric butterfly valve’s disc rotates on an axis aligned with the centerline of both the valve body and the pipe. Though both types manage flow regulation, they feature different design aspects.
The Features Between Eccentric and Concentric Butterfly Valves
Quality butterfly valves from China’s double eccentric butterfly valve suppliers china 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 double eccentric butterfly valve suppliers china 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.
