control pressure regulator

The main purpose of the controller is to match the flow of a medium, which can be gas, steam, or liquid, through the controller according to the medium requirements for the system. It will maintain the system pressure at the required pressure and control overpressure, and prevent problems that may arise in the system due to overpressure. Therefore, control pressure regulator can be seen in many industrial applications, for example, in pneumatic automation. used to control compressed air

What is the Need for an Air Pressure Regulator?

Most industrial plants use compressed air as a source for much of their factory equipment. This compressed air is used on conveyor belts. Pneumatically operated devices such as solenoid valves, control valves, etc. The air control pressure regulator controls the pressure to plant equipment at each point of use on the airline.

How to Choose a Pressure Regulator?

  • We must consider the working pressure range for the inlet and outlet.
  • We must consider the medium as regulated.
  • temperature range
  • required precision
  • necessary materials
  • overpressure protection
  • size and weight
  • The material used in the regulator.
  • Minimum and maximum capacity
  • Security options
  • ventilation and body orientation

Difference Between a Pressure Regulator &  a Regulating Valve

The control pressure regulator does not need an external power supply. But it is a control device that the control system will power. In the case of the control valve, there must be an external power supply. This will also require a transmission and control tool.

What is the Main Function of the Digital Pressure Regulator:

  • It will provide a constant outlet pressure.
  • Reduces the pressure level to industrial equipment from a pressure source.
  • It will protect industrial equipment from overpressures.

How Does the Electric Air Pressure Regulator Work?

The control pressure regulator has three functional elements, reducing pressure. The sensing element of the regulator can be a diaphragm or it also be a piston. And there is also a reference force element, and most of it is a piston. The principle of operation of most air pressure valve is the same during work. The reference force generated by the spring opens the valve. 

Opening this valve will put pressure on the sensing element and close the valve until it is open enough to maintain the set pressure. So the reducing element is the valve, and the piston is the sensing element. The reference force element determines how much pressure the system requires, and consequently, the valve opens. The reference force element is a mechanical spring.

Advantages of Control Pressure Regulator:

  • No external power is required for the position of the valve
  • No need for separate measuring elements or feedback controllers
  • Design tends to be simple, providing low cost, high reliability, and easy maintainability
  • The absence of stem packing eliminates external leakage and source of high friction
  • The control pressure regulator is in direct contact with the controlled variable and offers a very fast response

How can we Verify the Correctness of the Pressure Regulator:

We can determine the accuracy of the control pressure regulator by comparing the outlet pressure and flow rate. If the flow rate increases, The outlet pressure must be reduced. And this process is called a slump. We can determine the accuracy of the regulator based on the drop that the electronic pressure regulator creates over the flow. If the roll is less, the controller will have good accuracy.

By admin