Trunnion Ball Valve effect

The term "Trunnion Ball Valve effect" is not a commonly known term or concept in the field of engineering or valve technology. It is possible that it could be a specific term used in a particular industry or by a specific manufacturer, but without further context or information, it is challenging to provide a precise answer.

In general, a trunnion ball valve is a type of quarter-turn valve that uses a ball with a hole through its center to control the flow of fluid. The ball is held in place by trunnions (axles) at the top and bottom, allowing it to rotate and control the flow when the valve is operated. These valves are commonly used in various industries for their efficiency, low pressure drop, and tight shut-off capabilities.