The valve USES worm wheel, worm drive, then the CAM rotation according to the predetermined position on the signal device contact pressure or release, the corresponding output "on" "off" electrical signals, show the butterfly valve open and close state.

Two, signal groove butterfly valve characteristics

1, small and light, easy to disassemble and repair, and can be installed in any position.

2, simple structure, compact, 90° rotation opening and closing quickly.

3. Small operating torque, light and labor-saving.

4, flow characteristics tend to straight line, good regulation performance.

5, opening and closing tests up to tens of thousands of times, long life.

6, to achieve complete sealing, gas test leakage is zero.