Standards:
1) Design and manufacture: API609 MSS SP-68
2) Face to face/end to end: ANSI B16.10
3) Flange dimensions: ANSI B16.5a
4) Butt welding dimensions: ANSI B16.25
5) Pressure temperature rating: ANSI B16.34
6) Inspection and test: API598

High temperature high pressure butterfly valve is a patent of our company.It can
be used as open-and-close device in pipeline carrying noncorrosive medium, such
as water, steam and petroleum, temperature less than &le:425^oC. With
the use of chrome molybdenum steel, they can be suitable for temperature up to 550^oC.With
the use of stainless steel, they can be suitable for pipeline
carrying corrosive acidic and alkaline medium, and other pollution-free medium.
The products are widely used in pipeline in the industries of petroleum, chemical,
waterpower, thermal power, pharmaceutical, foodstuff and etc.