Electric gate valve installation attention

1. Pay attention to the flow direction of the medium when installing the valve, and install it strictly in the direction indicated by the flow direction arrow of the valve.
2. The valve can be installed in any position of the pipeline, and the valve of carbon steel or alloy steel can be selected according to the medium and the temperature of the medium.
3. Install it as vertically as possible, with the valve stem upwards.
A, the opening process
1. In the closed position, the valve body is pressed against the valve seat by the mechanical pressure of the valve stem.
2. When the handwheel is turned counterclockwise, the valve stem moves in the opposite direction, and the angular plane at the bottom makes the ball disengage from the valve seat.
3. The valve stem continues to lift and interacts with the guide pin in the helical groove of the valve stem, so that the ball starts to rotate without friction.
4. Until it reaches the fully open position, the valve stem is lifted to the limit position, and the ball rotates to the fully open position.
B, the closing process
1. When closing, rotate the handwheel clockwise, the valve stem starts to descend and the ball leaves the valve seat and starts to rotate.
2. Continue to rotate the handwheel, the valve stem is acted by the guide pin embedded in the upper spiral groove, so that the valve stem and the gate plate rotate 90° at the same time.
3. When it is about to close, the gate body has rotated 90° without contacting the valve seat.
4. During the last few turns of the handwheel rotation, the angular plane at the bottom of the valve stem mechanically wedges the sphere to press the ball tightly, so that it is tightly pressed on the valve seat to achieve complete sealing.

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