Indoor riser drainage with the same floor is a novel design and construction of the installation process is completed in the reinforced concrete floor, the body will be flat thin horizontal drain and pipe network, the leveling layer directly into the riser. After the toilet drainage, or split the tank hidden in the pipe partitions. For the convenience of network maintenance, set in the shower room with a waterproof access door. Master bathroom, bathtub drain pipe network seal enough reasonable arrangements, should be raised to the bottom of the bath to leveling layer above. The height of the screed is only 55mm greater than the traditional floor. Not only solve the traditional floor drain pipe drip, Qing Tong affect the environmental health of neighbors, but also save the investment than the use of caisson pipe. Replacement equipment and pipe network maintenance and caisson tube way, the former light, the latter time-consuming and laborious. Development of the same level of drainage is not the difficulty of technology, but the traditional concept. 2003 "Building Water Supply and Drainage Design Code" provides: the depth of the drain seal, is based on the provisions of foreign norms. 50mm water seal depth is to determine the gravitational flow drainage system, the diameter of the vent pipe and drainage pipe diameter basis. In some areas, attempts to add suction valves to reduce the depth of the seal are not appropriate. A suction valve only balances the negative pressure, but can not eliminate the positive pressure fluctuations. The second valve flap valve aging, loss of function caused by indoor environmental pollution. The third floor drain to reduce the depth of the seal is bound to reduce the water seal water volume, easy to evaporate dry. Suction valve to eliminate negative pressure, siphon loss to nearly zero. Positive pressure without removing by the valve parts, but by "double" structure principle, the use of pipe network to promote the increase of water seal. Aging valve disc aging is the most critical part of technological breakthroughs, the use of wear-resistant, oil-resistant, dense silicone rubber plus anti-aging agent, to improve technical performance, the aging period of 8 to 10 years, the inevitable home replacement bulb It's easy. So, bell-type floor drain in terms of static or dynamic aspects, there is no superiority. Because the latter design is a low water seal as the guiding ideology, specifically with less evaporation loss and high back to get high performance, high-quality suction valve located in the hidden place, to better ensure its unique effect. Floor drain to take water seal protection, the concept should be updated.
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