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Compared with other types of valves, pneumatic ball valve has the advantages of angular stroke output torque, rapid, stable and reliable opening, wide application, and the following advantages:1. The thrust bearing reduces the friction torque of the valve stem, which can make the long-term operation
1、 Wear resistance; Because the ball valve core of hard seal ball valve is alloy steel spray welding,and the sealing ring is alloy steel surfacing, so the hard sealed ball valve will not produce too much wear when opening and closing.2、 Good sealing performance; As the sealing of hard sealed ball va
