(1) pneumatic control valve installation position, from the ground requires a certain height, the upper and lower valve to leave some space for valve disassembly and repair. For vehicles equipped with pneumatic positioner and hand wheel control valve, must ensure that the operator, observe and easy to adjust.
(2) regulating valve should be installed in horizontal pipelines, and up and down a vertical pipe, usually to be supported in a valve, to ensure stable and reliable. For special occasions when you need to adjust the valve installed horizontally in a vertical pipe, valve should also be supported (except small-caliber valve). When installed, the control valve to avoid bringing additional stress).
(3) valve operating ambient temperature is at (-30 to 60) relative humidity less than 95% to 95%, relative humidity less than 95%.
(4) before and after the valve position should be straight pipe length is not less than 10 times the diameter of the pipe (10D), in order to avoid short straight pipe valve affect flow characteristics.
Diameter process piping (5) control valve are not the same, different-diameter pipe connection should be used. When small-caliber valve installation, use threaded connections. Fluid direction of the arrow on the valve body should be consistent with the flow direction.
(6) To bypass pipe. Purpose is to facilitate switching or manual operation, without the parking regulating valve repair.
(7) before the valve is installed inside the pipe to completely remove foreign matter, such as dirt, welding slag.