ESD VALVE SELECTION GUIDE GENERAL ESD VALVE DEFINITION

3.4 Floating vs. trunnion ball valves Main reason for this consideration is trim / seat surface pressure. Too high surface pressure can cause trim / seat damage within a few strokes. Very expensive coatings can be easily avoided. Floating valves are recommended to be used only for sizes below 8" in ANSI 150 lbs and below 6" in ANSI 300 lbs ...

  Valves, Ball, Floating, Trunnion, Trunnion ball valves, Floating valves