It is separated in the separation chamber air out from the outlet pipe to drain, ZW40-10-20 pump, and the water is still flowing through the impeller backwater hole around the outer edge, and mixed with the air suction pipe. This cycle repeated gradually sucked the air pipe drained the water into the pump, ZW32-10-20 pump, complete self-absorption process. Self-priming pump diaphragm pump sewage pump gear pump screw pump the same, the difference is only the outer edge of the backwater does not flow to the impeller, and the impeller inlet flow. In other conditions remain unchanged, self-priming height also increases storage height increases (but not exceed the height of the separation chamber optimum storage). In order to better enable self-priming pump water mixed gas, pump, the impeller blades to be less, so that the cascade pitch increases; and should adopt the semi-open impeller (or impellers wide channel impeller ), which is more convenient for deep penetration of the impeller backwater Cascades. ZW32-9-30 pump, pump, sewage pumps supplied by Shijiazhuang-Pump Co., Ltd. faction. Shijiazhuang-school Pump Co., Ltd. (www.shipaipump.com) strong, credible, and other industries in other Shijiazhuang, Hebei accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Shijiazhuang-faction pump into the brilliant and you work for a better future!