Shanghai Xiang bathing, swimming pool] [Jiangsu, Shanghai Xiang bathing pool provided by. We are Shanghai Xiang Bath Equipment Co., Ltd. (www.shxsxy.com) in: Shanghai Shanghai, specializes in: SPA massage pool engineering, installation, engineering, installation swimming pool, sauna, water is first pumped into the project to install swimming pool filtration system, and then flows back return pipe (the pool wall inlet valve). This system uses a lot of suction method. However Nantong pool, pool construction and operation as long as the right, there is almost no risk to people suck stick to drain. When only one left in the pool drain flow, suction piping systems such phenomenon will occur. In a safe pool, always has a plurality of main drains and several skimmer drain. Therefore Suzhou pool, if someone or an object blocked drains, sewer pumping systems from other pumping. This eliminates the effect of suction on the blocked drain. The filter system filters the high-speed sand filters. Sand filter is a glass fiber, a large water tank made of concrete or metal, slightly square box has paved super thick sand bed of sand. Dual sand filters during a special filter sand filter operation, the pool of dirty water through the filter of the inlet pipe, inlet pipe connected to a water tank inside the head. Gravity, water down through the sand Jiangsu pool, sand particles to intercept all dust and rubbish. At the bottom of the tank, the water filtered through the catchment device, and then flows out from the outlet pipe.