The pneumatic actuator’s primary accessory is the regulating valve positioner. It works in tandem with the pneumatic actuator to increase the valve’s position precision, neutralize the effects of the medium’s imbalanced force and stem friction, and make sure the valve responds to the regulator’s signal. attain the proper positioning.

The following conditions necessitate the use of a locator:
When the medium pressure is high and there is a significant pressure difference; 2. When the regulating valve’s caliber is large (DN>100);
3. A valve that regulates high or low temperatures;
4. When it’s important to quicken the regulating valve’s activity;
5. When standard signals are used to drive actuators with unconventional spring ranges (spring ranges outside of 20-100KPa);
6. Whenever split-range control is utilized;
7. When the valve is turned around, the air-to-close and air-to-open directions become interchangeable;
8. When the positioner cam needs to be modified in order to change the flow characteristics of the valve;
9. When proportionate action is to be achieved, there is no piston actuator or spring execution mechanism;
10. Electric-pneumatic valve positioners must be distributed when employing electric signals to control pneumatic actuators.

The electromagnetic valve: A solenoid valve must be installed in the system when program control or two-position control are required. The interaction between the solenoid valve and the regulating valve must be taken into account when choosing a solenoid valve in addition to the AC and DC power source, voltage, and frequency. It can have either “normally open” or “normally closed” functionality.
Two solenoid valves can be used in parallel if it is necessary to increase the solenoid valve’s capacity in order to reduce the action time, or the solenoid valve can be used as a pilot valve in conjunction with a large-capacity pneumatic relay.

Pneumatic relay: A pneumatic relay is a type of power amplifier that may convey the air pressure signal to a distant location to remove the lag brought on by the signal pipeline’s extending. Between the regulator and the field regulating valve, there is additional function to amplify or deamplify the signal. It is primarily utilized between the field transmitter and the regulating device in the central control room.

converter:
The converter is divided into a gas-electric converter and an electric-gas converter. Its function is to realize the mutual conversion of a certain relationship between gas and electric signals. It is mainly used to convert 0~10mA or 4~ 20mA electric signal conversion or 0 ~ 100KPa gas signal into 0 ~ 10mA or 4 ~ 20mA electric signal.

regulator for air filters:

A device attachment used with industrial automation equipment is the air filter pressure lowering valve. Its primary job is to stabilize the pressure at the desired level while filtering and purifying the compressed air coming from the air compressor. Air cylinder, spraying equipment, air supply sources, and pressure stabilizing devices of small pneumatic tools are some examples of the pneumatic instruments and solenoid valves it can be utilized in.

Safety valve (self-locking valve)

The self-locking valve is a mechanism that keeps the valve in place. When the air source fails, the device can switch off the air source signal to retain the membrane chamber or cylinder’s pressure signal at its pre-failure level and the valve’s position at its pre-failure setting. To the effect of position protection.

position transmitter for valves
When the regulating valve is far from the control room, it is necessary to equip a valve position transmitter, which converts the displacement of the valve opening into an electrical signal and sends it to the control room in accordance with a predetermined rule, in order to accurately understand the switch position of the valve without going to the site. The signal may be a continuous signal representing any valve opening or it may be regarded as the valve positioner’s reversing operation.

Communication switch while travel
The limit switch is a component that simultaneously transmits an indicator signal and reflects the valve switch’s two extreme positions. The control room can report the switch status of the valve based on this signal and take appropriate action.