Flange type fully welded ball valve

The flange-type fully welded ball valve adopts a special structural design and has the characteristics of maintenance-free. Before the burial, the outer side of the valve is coated with a special anti-corrosion coating of Pu. At the same time, three injection pipes for emergency grease injection of the valve seat and the valve stem The middle cavity venting tube and valve stem are properly extended according to the depth of the ground, so that the staff can complete various operations on the ground.