What is the working principle of a pneumatic valve?
2021-08-02 00:00:00
The pneumatic control valve is composed of an actuator and an adjustment mechanism. The actuator is the thrust component of the regulating valve, which generates the corresponding thrust according to the pressure of the control signal to push the regulating mechanism to move. The valve body is the regulating component of the pneumatic regulating valve, which directly contacts the regulating medium to regulate the flow of the fluid.
General requirements:
1. The specifications and categories of pneumatic valves should meet the requirements of the pipeline design documents.
2. The model of pneumatic valve should be marked with the national standard number requirement. If it is a corporate standard, the relevant description of the model should be indicated.
3. The working pressure of the pneumatic valve is required to be ≥ the working pressure of the pipeline. Under the premise of not affecting the price, the pressure that the valve can withstand should be greater than the actual working pressure of the pipeline; any side of the pneumatic valve should be able to withstand 1.1 times when the valve is closed The valve working pressure value does not leak; when the valve is open, the valve body should be able to withstand the requirement of twice the valve working pressure.
4. The pneumatic valve manufacturing standard should state the national standard number based on it. If it is a corporate standard, the purchase contract should be accompanied by corporate documents. Pneumatic valve standards are divided into three specifications: national standard, American standard and Japanese standard.
General requirements:
1. The specifications and categories of pneumatic valves should meet the requirements of the pipeline design documents.
2. The model of pneumatic valve should be marked with the national standard number requirement. If it is a corporate standard, the relevant description of the model should be indicated.
3. The working pressure of the pneumatic valve is required to be ≥ the working pressure of the pipeline. Under the premise of not affecting the price, the pressure that the valve can withstand should be greater than the actual working pressure of the pipeline; any side of the pneumatic valve should be able to withstand 1.1 times when the valve is closed The valve working pressure value does not leak; when the valve is open, the valve body should be able to withstand the requirement of twice the valve working pressure.
4. The pneumatic valve manufacturing standard should state the national standard number based on it. If it is a corporate standard, the purchase contract should be accompanied by corporate documents. Pneumatic valve standards are divided into three specifications: national standard, American standard and Japanese standard.
