Electric cast steel ball valve with flange switch

1 q941f- 25p dn350Electric cast steel ball valve with flange switchsummary:

Switch cast steel flange electric ball valveThe product has excellent sealing performance, high flow capacity, low flow resistance coefficient, simple structure, easy maintenance, and long service life. The valve body channel and connecting pipe diameter are equal and form a diameter. The product is usually used in occasions with strict sealing requirements. In addition to controlling gas, liquid, and steam media, it is also suitable for controlling sewage and media containing fibrous impurities. It is widely used in various fields such as petroleum, chemical, metallurgical, light industry, papermaking, power station, refrigeration, etc.

II q941f- 25p dn350Electric cast steel ball valve with flange switchOpening process:

In the closed position, the ball is tightly pressed against the valve seat by the mechanical pressure exerted by the valve stem.

When the handwheel is turned counterclockwise, the valve stem moves in the opposite direction, and its bottom angular plane causes the ball to detach from the valve seat.

The valve stem continues to lift and interacts with the guide pin in the spiral groove of the valve stem, causing the ball to start rotating frictionlessly.

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.

3、 Working principle:

Closing process
When closing, rotate the handwheel clockwise and the valve stem begins to descend, causing the ball to move away from the valve seat and begin to rotate.
Continuing to rotate the handwheel, the valve stem is subjected to the action of the guide pin embedded in its spiral groove, causing both the valve stem and the ball to rotate 90 ° simultaneously.
When it was about to close, the sphere had already rotated 90 degrees without contact with the valve seat.
After a few turns of turning the handwheel Z, the angular plane at the bottom of the valve stem mechanically wedges and presses the ball tightly against the valve seat, achieving * sealing.

4installNotes:

1. Remove the protective covers on both sides of the flange end and rinse and clean with the valve * open.

2. Before installation, the entire machine should be tested according to the specified signal (electric or gas) to prevent vibration from affecting performance during transportation. Only after passing the test can it be installed online (wiring should follow the electric actuator circuit diagram).

Before connecting to the pipeline, it is necessary to flush and remove any remaining impurities in the pipeline (which may damage the valve seat and ball).

During installation, do not use the actuator part of the valve as a lifting point to avoid damaging the actuator and accessories..