What should be paid attention to when operating the pneumatic regulating valve

　　Before the installation of the pneumatic regulating valve, it is necessary to carefully remove the welding slag and other impurities in the pipeline; after the installation, the valve core should be in the open position, and the pipeline and the regulating valve should be cleaned again to prevent the impurities from jamming and damaging the spare parts. The operating device of the pneumatic regulating valve should pay special attention to the following points when installing the regulating valve: the regulating valve should be vertically installed in the horizontal pipeline, such as in the special equipment In other cases, when horizontal and skew devices are required, support is generally required.

　　Pneumatic control valve
　　When the nominal diameter of the selected regulating valve is different from the process pipe diameter, the reducing joint shall be added for connection. The installation site shall have good environmental conditions, and the ambient temperature shall be between - 25 ℃ and 55 ℃. Try to prevent the installation from vibration source, otherwise necessary anti vibration reinforcement measures shall be taken. During installation, it is necessary to make the arrow direction on the valve body or flange point to the medium direction.
　　Before the technical installation of the operating device of the pneumatic regulating valve, it is necessary to carefully remove the welding slag and other impurities in the pipeline; after the installation, the valve core should be in the open position, and the pipeline and regulating valve should be cleaned again to prevent the impurities from jamming and damaging the spare parts. The pneumatic regulating valve should be installed in the position convenient for maintenance and repair. The straight pipe section in front of the valve shall be as long as possible, and the straight pipe section with 3 ~ 5 times of the pipe diameter shall be used for outlet piping.
　　In order to ensure that the production and accidents will not be affected when the conditioning valve and conditioning system have faults, it is generally necessary to install bypass valve and bypass valve. The stop valve should be installed before and after the regulating valve, and the pilot valve should be installed for high temperature, high pressure, easy freezing and viscous media. The bypass valve should not be installed directly above the regulating valve to avoid corrosive medium leaking to the regulating valve.