Trunnion Mounted Ball Valve -> Metal Seated Ball Valve
Metal-seated ball valves are introduced when the temperature and pressure rating of fluids override the limit of traditional PTFE-seated ball valves. Metal-seated ball valves combine the advantage of both gate valves and PTFE-seated ball valves, and are recommanded in some extreme conditions.
The Manufacturing and maintenance of metal-seated ball valves are challenging, because of the difficulty of matching arc sealing faces of seats and balls. Both seats and balls are normally hardened to avoiding the scratches in use.
Features of Metal Seated Ball Valves:
Floating Ball or Trunnion Mounted Ball
Metal-to-metal Seated
Split Body, End Entry
2-Piece or 3-piece Body
Full Port for Pigging Operation
Fire Safe to API 607
Antistatic Design
Anti-blowout Stem
Gear Operation or Actuator Available
Applicable Standards of Metal Seated Ball Valves:
a) Design & Manufacture: API 6D, BS 5…