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Concentric Butterfly Valve

The resilient seat butterfly valve, also known as a centerline butterfly valve, is a component used for controlling flow and isolating sections in piping systems. The structural feature of the centerline butterfly valve is that the stem axis, the center of the butterfly disc, and the center of the body are all aligned in the same position. This design is simple and easy to manufacture. A common example of this type is the rubber-lined butterfly valve.…
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Product Description
The resilient seat butterfly valve, also known as a centerline butterfly valve, is a component used for controlling flow and isolating sections in piping systems. The structural feature of the centerline butterfly valve is that the stem axis, the center of the butterfly disc, and the center of the body are all aligned in the same position. This design is simple and easy to manufacture. A common example of this type is the rubber-lined butterfly valve.
Features & Benefits

  • Innovative, reasonable, and unique design, lightweight, and quick to open and close.

  • Low operating torque, easy to operate, labor-saving, and agile.

  • Can be installed in any position, easy to maintain.

  • The sealing components are replaceable, ensuring reliable performance with bi-directional sealing and zero leakage.

  • The sealing materials are resistant to aging and weak corrosion, offering a long service life.


General Information

◎ Material: Carbon Steel, Stainless Steel, Alloy Steel

◎ Nominal Size: NPS 2"~64", DN50~1600

◎ Pressure Rate: Class 75~150, PN 2.5~25

◎ Temperature Range: -46°C~+120°C

◎ Operator: Manual, Pneumatic, Electric, etc...

◎ Application range: Suitable for water supply and drainage and gas pipelines in food, medicine, chemical industry, petroleum, electric power, light 

textile, paper making, etc. to adjust the flow and intercept the medium.


Technical Specification

◎ Design Standard: API 609, GB/T 37621, GB/T 12238

◎ Pressure Temperature Rate: ASME B16.34, GB/T 12224

◎ Face to Face: ASME B16.10, GB/T 12221, EN558

◎ Flange Standard: ASME B16.5, GB/T 9113, JB/T 79, HG/T 20592, EN1092, GOST 33259

◎ Pressure Test: API 598, API 6D, GB/T 13927, JB/T 9092, GOST 9544


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