Double Flange Center Line Sealing Butterfly Valve

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Product Details


Butterfly valve  is used for isolating or regulating  flow   and its function allows for quick shut off. There are many different kinds of butterfly valves, each adapted for different pressures and different usage in the industry.

Product Range

End Connection: Wafer, Lug, etc

Nominal diameter: 2" - 48"(DN15 - DN1200)

Pressure range: Class 150 - 600(PN16 - PN100)

Working temperature: -10℃ - +120℃

Body material: Cast Iron, Ductile Iron, Carbon Steel, Stainless Steel, Alloy Steel, Duplex Steel

Operation Type: Lever, Gear, Electric, Pneumatic, Hydraulic, etc

Main Features

The turning center of the butterfly plate is on the center line of the valve body and the sealing face section of the butterfly plate. In closing, the ex-circle sealing face of the butterfly plate will extrude the valve seat made of synthetic rubber, generating elastic deformation on the seat to form an elastic force used as a sealing specific pressure so as to guarantee the tightness of the butterfly valve.

Main Parameter Specification

Face to Face Dimension:API609, GB/T 12224

Pressure Temperature Rating:API 609, GB/T 12224

Test and Inspection:API 598, JB/T 9092, GB/T 13927

Design and Manufacture:API 609, MSS SP-67, GB/T 12238

Flange Connection Dimension:ASME B16.1, ASME B15.5, ASME B16.47, BS4504, GB/T 9113, JB/T 79