Pneumatic control valve is to compressed gas as the power source to the cylinder as the actuator, and by means of the valve positioner, converter, solenoid valve, security valve, gas tank, gas filter and other accessories to drive the valve, to achieve switch Or proportional adjustment, receiving the industrial automation control system control signal to complete the regulation of pipeline media flow, pressure, temperature, liquid level and other process parameters. Germany Hank (HANK) pneumatic control valve is characterized by simple control, rapid response, and intrinsically safe, no need to take another explosion-proof measures.
1, pneumatic valve installation location, from the ground requires a certain height, the valve up and down to leave a certain space in order to carry out the valve disassembly and repair. For the control valve with pneumatic valve positioner and hand wheel, it is necessary to ensure easy operation, observation and adjustment.
2, the control valve should be installed in the horizontal pipe, and vertical and vertical pipe, generally under the valve to be supported to ensure a solid and reliable. For special occasions, the need to adjust the valve installed in the vertical pipe, the control valve should also be supported (except for small diameter control valve). Installation, to avoid additional stress to the control valve).
3, the operating temperature of the control valve to (-30 ~ +60) relative humidity of not more than 95%.
4, the front and rear position of the control valve should be straight pipe, the length of not less than 10 times the diameter of the pipe (10D), in order to avoid the valve straight pipe section is too short and affect the flow characteristics.
5, the diameter of the valve and the process pipeline is not the same, should be used to connect the reducer. In the small diameter control valve installation, available thread connection. The direction of the fluid on the valve body should be consistent with the direction of the fluid.
6, to set the bypass pipe. The purpose is to facilitate switching or manual operation, in the case of non-stop control valve for maintenance.
7, the control valve in the installation before the complete removal of foreign bodies in the pipeline, such as dirt, welding slag and so on.
Precautions for use
1, the valve should be stored in a dry room, the two ends must be blocked. Not allowed to store storage
2, long-term storage of the control valve should be regularly checked, remove the dirt, in the movement part and the processing surface should be coated with anti-rust oil to prevent rust.
3, the valve should be installed in the horizontal pipe, compulsory vertical installation. Stem up.
4, compulsory according to the arrows indicated by the direction of the media flow direction to install.