API 6D floating sphere for ball valve 

Hard seal fixed ball seat assembly is suitable for long distance pipelines and general industrial pipelines, its strength, safety, resistance to harsh environment, etc. in the design of special consideration, suitable for all kinds of corrosive and non-corrosive media hard seal fixed ball valve. Fixed ball valve compared with floating ball valve, when working, the fluid pressure in front of the valve on the ball generated by the force is transferred to the bearing, will not make the ball move to the seat, so the seat will not bear too much pressure. Advanced spring preseat assembly with self-tightening features for upstream sealing. Each valve has two seats, each direction can be sealed, so the installation has no flow limit, is bidirectional. Suitable for all kinds of pipelines of Class150 ~ Class2500, PN16 ~ PN420, used to cut off or connect the medium in the pipeline. The hard seal fixed ball seat assembly is suitable for non-corrosive medium, weakly corrosive medium, nitric acid,…