The working principle of pneumatic valve ball - manually Pneumatic ball valve

one, the process is in the closed position, a sphere by pneumatic valve rod mechanical] Pressure effect, press on the pneumatic valve seat. When counterclockwise rotation handwheel, pneumatic valve stem is reverse movement, the Angle at the bottom of the plane made a sphere release pneumatic valve seat. Pneumatic valve stem continue to ascend, and with pneumatic valve rod guide pin of interaction in the spiral groove, rotating the sphere began without some friction. Until to the fully open position, pneumatic valve stem ascending to the limit position, sphere rotation to the full open position. Second, closed process, closed by rotating the handwheel clockwise, pneumatic stem began to drop and the ball left pneumatic seat begin to spin. Continue to rotate handwheel, pneumatic valve stem is embedded in the spiral groove on the role of the guide pin, pneumatic stem and ball ° rotating at the same time. Is closed, a sphere has been in contact with the pneumatic valve seat without rotating under the condition of the °. Hand wheel rotation of the last few laps, pneumatic valve stem mechanically wedge Angle at the bottom of the plane to the oppression of a sphere, make its strong pressure on the pneumatic valve seat, completely sealed.
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