Principle of pneumatic pressure regulating valve:

The pneumatic pressure regulating valve is a kind of pressure balanced regulating valve, which adopts 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 cage sleeve valve core is adopted for the pneumatic pressure regulating valve core, which transforms the air source 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, convenient maintenance, etc. It is characterized by stable operation, large allowable differential pressure, accurate flow characteristics and low noise. It is especially suitable for the working occasions where the leakage is small and the pressure difference between the front and back of the valve is large.

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 valve seat leakage, accurate flow characteristics, wide adjustable range and other characteristics. The pneumatic pressure regulating valve is bound to achieve high quality control effect in wide application with its unique advantages.

The pneumatic pressure regulating valve is composed of a multi spring pneumatic membrane actuator and a small single seat regulating valve body with low flow resistance. The multi spring actuator is low in height, light in weight and simple in equipment. The pneumatic pressure regulating valve of Shanghai Taichen Valve is equipped with a valve positioner to convert the current signal into a corresponding linear displacement, automatically control the opening of the regulating valve, and achieve continuous regulation of the pressure, flow, temperature, liquid level and other process parameters of the fluid in the pipeline. Pneumatic pressure regulating valve is widely used to precisely control the medium such as gas, liquid and steam, especially for the working occasions where the allowable differential pressure 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 improper, the control quality of the control system will be directly affected, and even cause serious production accidents. Therefore, we must attach great importance to the correct selection, installation and maintenance of regulating valves.

(1) According to the process conditions, select the appropriate control valve structure and type.

(2) Select appropriate flow characteristics according to process objects.

(3) According to the process parameters, calculate the flow coefficient and select the valve diameter.

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