1, The unique single-chip or double-plate impeller structure greatly improves the dirt passing capacity, can effectively pass the pump diameter of 5 times the fiber material and the diameter of the pump diameter of about 50% of the solid particles. 2, the mechanical seal with a new type of titanium carbide hard and decayed, pump safe and continuous operation of more than 8000 hours. 3, The overall structure is compact, small size, small noise, significant energy-saving effect, easy maintenance, no need to build pump room, dive into the water to work, greatly reducing project costs. 4, the pump seal oil chamber is equipped with high-precision anti-interference leakage detection sensor, stator winding embedded in the thermal components, automatic protection of the pump motor. 5, according to user needs with automatic control cabinet, the pump leakage, leakage, overload and over-temperature automatic protection, improve product safety and reliability. 6, float switch according to the desired level changes automatically control the pump start and stop, without special care, the use of very convenient. 7, WQ series can be equipped with double rail automatic coupling installation system according to user needs, which brings greater convenience to installation and maintenance, and people do not have to enter the sump for this purpose. 8, can be used within the whole head, and to ensure that the motor will not be overloaded. 9, there are two different installation methods, fixed automatic coupling installation system, mobile free installation.