According to the action mode of the valve, the pneumatic control valve can be basically divided into straight stroke and angular stroke. Pneumatic control valve is characterized by simple control, fast response, and its intrinsic safety, without additional explosion-proof measures. So, what should be paid attention to when installing the pneumatic control valve? Today, the bellows stop valve editor will talk to you about the installation details of pneumatic control valve.

Installation principle of pneumatic control valve

(1) The installation position of pneumatic control valve shall be a certain height from the ground, and a certain space shall be reserved for the upper and lower parts of the valve, and a certain space shall be reserved for the upper and lower parts of the valve, so as to facilitate the disassembly, assembly and repair of the valve. Disassembly and repair. For the regulating valve equipped with pneumatic valve positioner and hand wheel, it must be convenient to operate, observe and adjust.

(2) The regulating valve shall be installed on the horizontal pipeline and vertically perpendicular to the pipeline. Generally, it shall be supported under the valve to ensure stability and reliability. Straight, generally supported under the valve to ensure stability and reliability. For special occasions, when the regulating valve needs to be installed horizontally on the vertical pipeline, the regulating valve shall also be supported (except for small-diameter regulating valve). During installation, avoid additional stress on the regulating valve,).

(3) The operating ambient temperature of the regulating valve shall be (- 30 ~ + 60). The operating ambient temperature of the regulating valve shall be (- 30 ~ 60) (- 30). The relative humidity shall not be greater than 95%. ℃, relative humidity not more than 95%.

(4) There shall be a straight pipe section at the front and rear positions of the regulating valve, and there shall be a straight pipe section at the front and rear positions of the regulating valve. The length of the section shall not be less than 10 times of the pipe diameter (10d), 10 times of the pipe diameter), so as to avoid that the length of the section shall not be less than 10 times of the pipe diameter (10d), so as to avoid the impact of the flow characteristics due to the short straight pipe section of the valve.

(5) When the diameter of the regulating valve is different from that of the process pipeline, the reducing pipe shall be used for connection. When installing small diameter regulating valve, threaded connection can be used. Pipe connection. When installing small diameter regulating valve, threaded connection can be used. The fluid direction arrow on the valve body shall be consistent with the fluid direction. The fluid direction arrow on the valve body shall be consistent with the fluid direction. To set the bypass pipe.

(6) To set the bypass pipe. The purpose is to facilitate switching or manual operation, and the regulating valve can be overhauled without shutdown. The regulating valve can be overhauled without shutdown.

(7) Before the installation of the regulating valve, the foreign matters in the pipeline, such as dirt, welding slag, etc., shall be completely removed.