The stainless steel ball valve is used to control the valve to achieve unblocked or blocked, mainly used for cutting, distributing and changing the flow direction of the medium in the pipeline. It is the same type of valve as the plug valve, the only difference is that its closing part is a sphere, and the purpose of opening and closing the valve is achieved by the sphere rotating around the center line of the valve body.
Wenzhou Longwan Junkai Valve Factory is located in Longwan, the Valve City of China. Is a professional manufacturer of stainless steel valves. The main products are: stainless steel ball valve, stainless steel Y-type filter, stainless steel flange, stainless steel mirror, stainless steel gate valve, stainless steel globe valve, stainless steel check valve, etc.
The opening and closing process principle of the stainless steel ball valve is as follows:
Opening of stainless steel ball valve:
1) The ball in the closed position is pressed against the valve seat by the mechanical pressure of the valve stem.
2) When the handwheel is turned counterclockwise, the valve stem will move in the opposite direction, and the angular plane at the bottom of it will make the ball disengage from the valve seat.
3) Continue to lift the valve stem, interacting with the guide pin in the helical groove of the valve stem, and let the ball start to rotate without friction.
4) Wait until it is fully open, the valve stem is raised to the position, and the ball rotates to fully open.
Closing of stainless steel ball valve:
1) When the stainless steel ball valve is closed, the handwheel should be rotated clockwise, and the valve stem will start to drop while allowing the ball to leave the valve seat and rotate.
2) Continue to rotate the handwheel, and the valve stem is acted by the guide pin embedded in the upper spiral groove, so that the valve stem and the ball rotate 90° at the same time.
3) After a few turns of the handwheel, the angular plane at the bottom of the valve stem mechanically wedges against the ball to press it tightly against the valve seat to achieve a seal.
4) At the time of fast closing, the ball rotates 90° without contact with the valve seat.
The above is the opening and closing principle of the stainless steel ball valve, we can operate according to this step.