Pneumatic control valve transfuses energy into mechanical motion. It can be a rotary or linear motion depending on which type of actuator you are using. A set of pneumatic actuated valves can control the direction of the compressed air. An arrow indicates this direction of airflow. Actuation can be done manually, pneumatically, mechanically, or electrically. Sometimes automated systems offer solenoid-actuated valves that create the interface between pneumatic and electrical control. Using the output signals coming from the signal control depot, you can switch on the valves.
Functions of pneumatic actuated valves
There are multiple functions of pneumatic valves. Some of these functions are:
- Connects to a compressed air supply
- Turns off the compressed air supply
- Retracts and advances the cylinder
How does it control a single-acting cylinder?
The solenoid-operated valve is able to control the movement of a single-action cylinder drive. It has three ports and two switching positions. When a solenoid coil of the pneumatic actuated valves is de-energized, you can find a discharged cylinder chamber through the directional control valve. The piston rod can be retracted. When the coil gets a current supply, the directional valve changes the pressurised cylinder chamber. This stem also advances. At the moment when the current is no longer applicable to the solenoid coil, the valve can change again. This chamber gets exhausted, and the piston rod retracts.
Benefits
There are many advantages of pneumatic actuated valves. You can leverage these advantages when the following hydraulic and electric sources are available:
- Can reduce the contamination risks
- Pneumatic valve has fewer maintenance requirements
- It is available in various forms such as small, light, and more responsive air
- It is often used in applications that need rapid opening and closing
These are the basics that you need to learn about pneumatic valves. When you are well informed about the valves, you will be able to buy the right one.
