Function and purpose: 
 ?? Decontamination is used to clear and filter impurities and dirt in the pipeline, to maintain the cleanliness of the water quality within the system, reducing resistance, protective equipment and to prevent pipe blockage. 
 Device structure and working principle: 
 ??? Decontamination structure according to national standards in Figure R406 divided into horizontal straight-through decontamination, horizontal angle through decontamination and vertical through the three forms of decontamination. Decontamination galvanized wire is specified in the filter the original standard drawings to improve as a special stainless steel filter. Decontamination, flow into the cylinder by the intake filter to filter water from the outlet, outflow, dirt deposition at the bottom of the decontamination after sewage discharge.