Metal sealing system for triple eccentricity butterfly valve

A metal sealing system for a triple eccentricity butterfly valve comprising:

• a dynamic metal seal, comprising a metal core surrounded by an external coating;
• a metal case with an inclined conical external surface, the metal case including a first housing inside which the dynamic metal seal is mounted, and including a second housing formed as a cut-out in an upper or lower surface of the metal case;
• and
• a metal cover, attached to the metal case to allow the metal case to close by flush fitting of the upper face or lower face of the metal cover with a respective upper face or lower face of the metal case,
• wherein the metal cover is positioned within the cut-out of the metal case and extends along a portion of the first housing and is positioned adjacent the metal seal positioned inside the first housing, and
• wherein the dynamic metal seal is located between the metal cover and the surface of the metal case defining the first housing.