Principle of pneumatic pressure regulating valve:

The pneumatic pressure regulating valve is a pressure balanced regulating valve, which adopts a cage sleeve guide and double seal structure, and is equipped with a multi spring pneumatic membrane actuator. The actuator is low in height, light in weight and simple in equipment. The valve core of the pneumatic pressure regulating valve adopts the cage sleeve valve core, which converts the air supply pressure into the linear displacement of the valve core, and automatically controls the opening of the regulating valve, so as to continuously regulate the pressure of the fluid in the pipeline. Shanghai taichen pneumatic pressure regulating valve has the advantages of compact structure, light weight, sensitive action, small pressure drop loss, large valve capacity, accurate flow characteristics and convenient maintenance. It has the characteristics of stable operation, large allowable pressure difference, accurate flow characteristics and low noise. It is especially suitable for working occasions with small leakage and large pressure difference between the front and back of the valve.

The pneumatic pressure regulating valve is mainly applicable to the medium flow regulation, pressure stability, safety and other systems on the pipeline. The pneumatic pressure regulating valve has reliable action characteristics, small seat leakage, accurate flow characteristics, wide adjustable range and other characteristics. The pneumatic pressure regulating valve will have a high quality control effect in a wide range of applications with its unique advantages.

The pneumatic pressure regulating valve is composed of a multi spring pneumatic diaphragm actuator and a low flow resistance fine small single seat regulating valve body. The multi spring actuator has the advantages of low height, light weight and simple equipment. The pneumatic pressure regulating valve of Shanghai taichen valve is equipped with a valve positioner, which converts the current signal into the corresponding linear displacement, and automatically controls the opening of the regulating valve, so as to continuously regulate the process parameters such as the pressure, flow, temperature and liquid level of the fluid in the pipeline. Pneumatic pressure regulating valves are widely used to accurately control gas, liquid, steam and other media, especially in the workplace where the allowable pressure difference is small and the allowable leakage is small.

Selection of pneumatic pressure regulating valve:

The control valve is an important link in the automatic control system. If the selection and calculation are not accurate and the use and maintenance are not proper, it will directly affect the control quality of the control system, and even cause serious production accidents. Therefore, we must attach great importance to the correct selection, installation and maintenance of the control valve.

(1) Select the appropriate structure and type of control valve according to the process conditions.

(2) Select the appropriate flow characteristics according to the process object.

(3) Calculate the flow coefficient and select the diameter of the valve according to the process parameters.

(4) Select materials and auxiliary devices according to process requirements.