Flange fluorine-butterfly butterfly valve flange butt joint structure, lined with integration of valve body, valve seat and valve core, valve is working, only the body lining and lining plastic butterfly plate and the media contact, the valve can bear the medium corrosion of lining materials is introduced, using quadrupole seal structure and the sealing surface with heat-resistant anti-aging silicone rubber elastic gasket, completely reach the zero leakage of medium, With tight sealing performance, long service life.
