Pneumatic valve manufacturers commonly used accessories classification and use
In the actual use of pneumatic valves, in order to improve the stability and efficiency of the valve, we often need some auxiliary work, that is, pneumatic valve accessories. Generally speaking, common accessories of pneumatic valves include: air filter, reversing solenoid valve, limit switch, electrical positioner, etc. In pneumatic technology, the air filter, pressure reducing valve, oil mist processor of the three air source processing components assembled together, called pneumatic triplet, used to enter the air source purification filter of the pneumatic instrument, reduce to the rated air source pressure of the instrument, equivalent to the function of the power transformer in the circuit.
The choice of pneumatic valve fittings is very important for users. Next, Xiaobian will briefly introduce the common types of pneumatic valve accessories, including:
1. Double action pneumatic actuator: two control valve switch.
2, spring reset actuator: in the circuit gas cut off or fault, the valve automatically open or close.
3, single electric control solenoid valve: the valve is open or closed when the power supply, the valve is closed or open when the power is off.
4. Double solenoid valve: one coil is energized when the valve opens, the other coil is energized when the valve is closed, with memory function.
5. Electrical positioner: according to the current signal (standard 4-20)mA) control valve medium flow size.
6 pneumatic positioner: according to the pressure signal (standard 0).02-0.1mpa) control valve medium flow.
7, electrical converter: the current signal into air pressure signal, and pneumatic positioner matching use.
8. Limit switch returner: remote transmission of valve switch position signal.
9. Manual operation mechanism: manual operation and automatic control under abnormal circumstances.
10. Air source processing three pieces: including air pressure reducing valve: filter. Oil mist device, stable gas source. Clean. Lubricate moving parts.
