03/12/2022
There are two main types of ball designs: floating and trunnion. Floating is the most common design, while trunnion balls are often more expensive.
Floating balls are supported by cupped seats to create a tight seal between the body and the ball. Trunnion balls work similarly to floating balls, only the seats are spring loaded and the ball only rotates on its axis. The operating torque is generally lower for trunnion valves.