Usage:
　　Bi-directional metal seated butterfly valve was developed by our factory in 1992. It was awarded national patent two times(ZL93 2 03934.0,ZL98 2 420105.2). It is widely used to throttle or adjust media flow volume in industrial pipeline in the fields of petroleum, power, chemical and metallurgy.

Product standard and specification：
Design&Manufacture: GB12238、MSS SP-67、MSS SP-68、API 609、BS 5155
Face to face dimension: GB9113、JB79、ANSI B16.5、MSS SP-44、API 605
Pressure test: GB/T13927、ZBJ16-006、 API 598

Main material:


Technological and performance parameters