Features 

 1, open and close without friction: This feature is completely solve the traditional valve sealing surface because of friction between the sealing problem. 
 2, the coat structure: the valve mounted directly on the pipe-line inspection and maintenance. Devices are effective in reducing parking, reduce production costs. 
 3, single-seat design: the elimination of the valve due to abnormal pressure in the cavity medium affect the use of safety problems. 
 4, low-torque design: unique design of the stem, just with a small hand wheel can easily open and close the valve. 
 5, wedge-shaped seal structure: the valve stem is provided by the mechanical force to a seat on the ball and wedge pressure seal. The sealing performance of the valve from the pipeline pressure change, the sealing performance under various conditions have reliable guarantee. 
 6, the sealing surface of the self-cleaning structure: When the ball away from the seat tilt, the pipeline flow of experience along the sealing surface of the sphere into a 360 ° uniform adoption. Not only eliminate the local high-speed fluid on the valve seat erosion, but also washed away the sealing surface of the accumulation and to reach self-cleaning purposes. 


 Work ① When the valve is fully open position, turn the hand wheel clockwise, the stem nut with thrust bearings with the stem began to decline and promote the sphere to rotate. 

 ⑧ continue to turn the hand wheel, rose to the limit when the valve stem position, this time with the ball has reversed a 90 ° valve stem is in the fully open position. 
 ② Continuous handwheel stem groove on the track with precision spiral curve embedded in their interactions within the guide pins to drive non-stop ball with the valve stem clockwise. 

 ⑦ When the valve will be opened, the valve stem groove on the track with precision spiral curve embedded in their interactions within the guide pins driven ball valve seat sealing surface with no friction in the case of completely stop counterclockwise rotation. 

 ③ When the valve will be closed, the stem driven ball valve seat sealing surface with no friction in the case of fully rotated 90 °. 

 ⑥ continuous handwheel, the stem will rise at the same time led to the tilting away from the ball seat. 
 ④ continue to turn the hand wheel, the stem will fall again mechanically pressed ball, so ball in close contact with the valve seat to achieve the sealing effect. 

 ⑤ When the valve is fully closed when the handwheel counterclockwise. In the stem nut with thrust bearings with the stem began to rise, and promote the sphere to rotate.