The flange connection butterfly valve (center line) is designed and manufactured in compliance with the basic structural form of China's national standards (the disc axis coincides with the center line of the valve body and seat)
a.DA41F/P semi-lined valve body is fully lined/the disc and disc shaft are made of stainless steel (not lined) and the disc and shaft are connected by pins
b.DA41F46 fully lined valve body is fully lined/the disc and disc shaft are fully lined/the disc and shaft are fixedly connected.

Turbine Lined Fluorine Butterfly Valve

- Follow the standard: STANDARD
- Design and manufacturing: GB 12238 (center line)
- Structural length: GB 12221 (short and long series)
- Flange size: JB78/JB79 (or as required by contract)
- Pressure test: GB/T 13927
- Mark: GB 12220
- Supply: GB/T 12252