Valvesonly is the most trusted Trunnion Ball valve Manufacturer in USA. Trunnion ball valves belong to the family of quarter turn valves. The ball rotates 90 degrees to open or close the valve.  It controls the flow of fluid and allows the flow to either start or stop. Trunnion ball valve has got its name because the disc used in it is ball shaped. The ball shaped closure element present inside its body is connected to two trunnions which are pivoted and help in flow control. It is most useful in applications in which shutoff is necessary. The structure of a trunnion ball valve is similar to