Full bore and reduce structure of ball valve?

The channel inner diameter of full bore ball valve is consistent with the inner diameter of pipeline, which not only minimizes fluid resistance, but also facilitates pipeline cleaning.
The fluid resistance of necked bore ball valve is much less than that of the globe valve with the same caliber while its weight is 30% lighter than ball valves with the same caliber.As a result,it can effectively reduce both the production cost and price,and is relatively widely used.