How single action pneumatic valve to work
            
                                                  
When the air pressure from the air inlet (2) into the cylinder between the two pistons in the cavity, so that the separation of the two pistons to move the direction of both ends of the cylinder, forcing the spring compression at both ends of the air chamber through the air port (4) So that the two piston rack synchronous drive output shaft (gear) counterclockwise rotation.
                                                            
After the gas source pressure is changed by the electromagnetic valve, the two pistons of the cylinder move to the middle direction under the spring force of the spring, the air of the middle air chamber is discharged from the air port 2, and simultaneously the output shafts of the two pistons are driven, Clockwise rotation. (If the piston is installed in the opposite direction, the spring output when the output shaft to reverse rotation, that is, single-action reversal).
                                             
                                            
 Working conditions：
1. Working medium: dry or lubricated air or non-corrosive gas, impurity particles in the medium is less than 30μm.
2. Air supply pressure：2.5~8bar.
3. Medium ambient temperature：-20℃~+80℃.
4. Stroke adjustment: 0 °~ 90 ° two positions have ± 5 ° adjustment range
5. Use: indoor or outdoor.