ZW Self-priming sewage pump is based on the Company's designers ZX-type self-priming centrifugal pump and QW structure and properties Sewage pumps ZW40-15-30 pump, the advantages of similar products at home and abroad to learn and absorb the majority of many the user's requirements and the views expressed, developed from a set of self-absorption and sewage, both as a general self-priming pump water as need bottom valve, without irrigation water, but can pump large solid particles diameter 60% and fiber length outlet diameter of 1.18 times the diameter of the impeller dirt, sediment, mine waste impurities, excreta disposal and all sewage works and colloidal liquid completely reduce labor intensity, and the use of mobile, easy to install ZW40-20-15 pump, minimal maintenance, stable performance. Self-priming pump priming height, before sealing the gap with the impeller, the number of revolutions of the pump, the separation chamber liquid level and other factors. Impeller before sealing the smaller the gap, the greater the height of self-absorption, and generally 0.3 to 0.5 mm; when the gap increases, in addition to a high degree of self-absorption fell outside the pump, the pump head, the efficiency decreased. The height of the pump self-priming with the peripheral speed of the impeller increases ZW50-20-15 u2 pump, but when the maximum height of self-absorption, while increasing the number of revolutions of self-priming height is no longer increased, but this time shorten the self-absorption time; when the number of revolutions decline, along with the decline in self-priming height. Self-priming pump, ZW32-10-20 pump, non-clogging self-priming (certified merchants) provided by the Shijiazhuang-school Pump Company. Shijiazhuang-faction Pump Co. (www.shipaipump.com) is specialized in the "slurry pumps, submersible sewage pumps, sewage pumps, chemical pumps, pulp pump, water pump, mud pump, multi-stage," the enterprise, the company adhering to the " honesty, hard service "concept, to provide you with the highest quality products and services. Welcome to inquire! Contact: Manager Xu.