The flange of the pneumatic valve opening and closing process operation

Pneumatic valve flange only need to use rotate 90 ° and small rotational torque can be closed tightly. Full equality of the pneumatic valve body cavity for medium resistance is very small, straight flow channel. Generally think of pneumatic valve is suitable for direct to do the most open and close, but recent development has pneumatic valve designed to make it with throttling and control flow. Then its opening and closing process?


the flange of the pneumatic valve opening process

1, in the closed position, body subjected to mechanical pressure pneumatic valve stem, press on the pneumatic valve seat.

2, when the counterclockwise rotation handwheel, pneumatic valve stem is reverse movement, the Angle at the bottom of the plane body release pneumatic seat.

3, pneumatic valve stem continue to ascend, and with the pneumatic valve rod guide pin of interaction in the spiral groove, the body began to rotate without some friction.

4, until to the fully open position, pneumatic valve stem ascending to the limit position, body rotation to the full open position.

the flange of the pneumatic valve closing process

1, closing, rotating the handwheel clockwise, pneumatic valve rod began to drop and begin to spin from the body of pneumatic seat.

2, continue to rotate handwheel, pneumatic valve stem is embedded in the spiral groove on the role of the guide pin, pneumatic valve stem and rotate 90 ° at the same time.

3, is about to shut down, the body has been without contact with the pneumatic valve seat rotated 90 °.

4, the hand wheel rotation of the last few laps, pneumatic valve stem mechanically wedge Angle at the bottom of the plane to the oppression, make its strong pressure on the pneumatic valve seat, completely sealed.