Tees ball valve working principle
A, open process
1 in the closed position, the sphere of mechanical pressure by the role of the stem, pressed on the seat.
2 When the handwheel counterclockwise, the stem is the reverse movement, the bottom of the angular surface to disengage the ball valve seat.
3 stem continues to rise, and with the spiral groove of the guide pin stem interactions, the ball began to spin without friction.
4 until the fully open position, the stem raised to the limit position, the ball rotated to the fully open position.
B, close the process
A closed, clockwise rotation of hand wheel, the stem began to leave the seat down and to the sphere to rotate.
2 continues to rotate the hand wheel, spiral stem was embedded in its slot on the role of guide pins, making the stem and the ball while rotating 90