In the actual use of pneumatic valves, in order to improve the stability and efficiency of valve use, we often need to resort to some auxiliary work, which is the accessories of pneumatic valves. Generally speaking, the common accessories of pneumatic valves include: air filter, Reversing solenoid valve, limit switch, electric positioner, etc. In pneumatic technology, the air filter, pressure reducing valve, and lubricator are assembled together as three air source processing components, which are called pneumatic triple parts, which are used to purify and filter the air source entering the pneumatic instrument and decompress it to the rated air source of the instrument. The pressure is equivalent to the function of the power transformer in the circuit.

The selection of pneumatic valve accessories is very important for users. Next, I will briefly introduce the common types of pneumatic valve accessories, among which:

1. Double-acting pneumatic actuator: two-position control for valve opening and closing.
2. Spring return actuator: when the air circuit of the circuit is cut off or fails, the valve will automatically open or close.
3. Single solenoid valve: the valve opens or closes when the power is supplied, and the valve closes or opens when the power is cut off.
4. Double solenoid valve: the valve opens when one coil is energized, and the valve closes when the other coil is energized, with memory function.
5. Electric positioner: adjust and control the medium flow of the valve according to the magnitude of the current signal (standard 4-20mA).
6. Pneumatic positioner: adjust and control the medium flow of the valve according to the size of the air pressure signal (marked 0.02-0.1MPa).
7. Electrical converter: convert current signal into air pressure signal, and use it with pneumatic positioner.
8. Limit switch feedback device: transmit the signal of the switch position of the valve over a long distance.
9. Manual operation mechanism: automatic control can be operated manually under abnormal conditions.
10. Air source treatment triple unit: including air pressure reducing valve, filter, lubricator, to stabilize the air source, clean and lubricate the moving parts.

For more information about pneumatic valves, welcome to continue to pay attention to the company’s website to learn more!