Flanged Concentric Butterfly Valve - China

Basic information Flanged concentric butterfly valve is used in various service and drain lines as truncation and regulating equipment.

Features 1 - Bidirectional sealing, no flow direction of the medium;

2 - Valve body vulcanized EPDM, reliable sealing;

3 - A dial with an opening indication showing the position of the disc switch;

4 - Flow characteristics straight line, good regulation performance.

Principle The rotary center of the flanged butterfly disc (that is, the center of the stem) is located on the centerline of the valve body and the sealing surface section of the disc.

When the disc is closed, the disc's circular sealing surface squeezes the synthetic rubber seat so that the seat produces elastic deformation and forms the elastic force to seal the butterfly valve.

If the remote control is required, different types of electric devices can be equipped according to different working conditions.

Installation and Commissioning Clean the inner cavity and sealing cover of the valve before installation.

This butterfly valve can be installed on the horizontal, vertical and any Angle pipe, and can be used in both directions.

The butterfly valve must be in the closed position during installation to ensure that the disc does not collide with the pipe flange.

Make sure the flange welding is correct.

After the butterfly valve is installed, it is not allowed to weld the flange again, so as not to burn the rubber parts and the anti-corrosion coating.

For specific use, please consult ZhengFeng Valve Group.

Part Material Standard Body Ductile Iron EN 1563/DIN 1693 Disc Ductile Iron EN 1563/DIN 1693 Seat EPDM / NBR ISO 4633 Stem Stainless Steel 431 EN10088-1/ASTM A959 Bolt Stainless Steel 431 EN10088-1/ASTM A959 Worm Actuator Ductile Iron EN 1563/DIN 1693 For the materials options not listed, consult factory.

ZhengFeng manufactures valves in more than 50 different alloys.

Product scope, Standards & Materials Size Range: 2"~48"

Pressure Rating: 10bar ~ 25bar

Face to Face Dimensions: AMSE B16.10, EN558-1

Flange End Dimension: AMSE B16.1/16.42, AS4087, EN1092-2

Coating: Fusion Bonded Epoxy Coating Inspection and Test: ISO 5208 / EN 12226-2

Company Contact:

• Posted By: ZhengFeng Valve Group

• Phone: 13816296699

• Address: Caoan Road 3999#, JiaDing District, Shanghai, China , jiading , shanghai , China

• Email:

• Website: https://www.zhengfengvalve.com

• Business Description: ZhengFeng Valve Group, founded in 1991 with focus on manufacturing Water valves, including control valves, balancing valves,gate valves, butterfly valves, check valves, and air valves.
  
  Valve sizing 1/2” to 88”, rating BS 10bar through BS 25bar, served covering buildings & construction，waterworks ，fire protection and many other fields.
  
  Zhengfeng has excellent product quality and sound managing system.
  
  We have certificates of ISO9001, ISO14001,ISO18001,WRAS， FM，API 6D, CE, TS, and Sanitary Certificate for Drinking Water Equipment.
  
  Meanwhile, our products are insured by PICC.
  
  Besides, we are member of China Valve Industry Association, China Fire-proof Association and Water Supply and Sewage Engineering Division of China Construction Metal Structure Association, and having long-term cooperation with China National Chemical Equipment Corporation (CNCE) and China Petroleum & Chemical Engineering Survey and Design Association（CPCESDA）.
  
  After development of 26 years, today the company supplies products to more than 30 countries and regions in the world and becomes one of the leading suppliers of water valves in China.