Is an important part of a piston type pressure reducing valve adjustment pressure piston plug, through the piston plug open-close mouth size to balance the pressure inside the pipeline, such as valve before the pressure is not stable, valve after pressure there will be a wave phenomenon, should be combined with anterior dislocation of the Industrial Valves pressure fluctuations, in regulating setting, according to the inlet pressure of 1. 3 mpa, outlet pressure of 0. 5 mpa to adjust, before the valve pressure fluctuations cannot be greater than zero. 3 mpa, can appear otherwise valve after pressure fluctuations. For lai by the Shanghai jian valve technical personnel answer how to adjust pressure method and steps for you; 1, before the adjustment pressure should be of piston reducing valve cleaning, and to ensure that the internal without impurities, such as embroidery slag and foreign body should be cleaned as soon as possible. 2, the piston type pressure reducing valve belong to automatic valve class, before installation shall be equipped with filter device, in order to avoid line of sundry, foreign bodies blocked to the piston. 3, requests for installation direction of piston reducing valve, dealing with the direction of arrow mark installation, lest appear after adjustment of pressure can't decompression, unable to run. 4, pressure reducing valve is installed, start debugging, pressure reducing valve back end block valves should be closed first, ensure the pressure of the valve after pressure. 5, such as reducing valve itself without pressure gauge, before and after the valve should be equipped with pressure gauge to check the pressure on the pipeline. 6, the most at the top of the piston type pressure reducing valve has a regulating pressure of screw, should all loose before debugging. 7, began to adjust, the top screw to lock, try many times, after the valve pressure in the set pressure value after adjustment.
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