Priming pump is self-priming height, before sealing the gap with the impeller, the number of revolutions of the pump, the separation chamber liquid height and other factors. Impeller before sealing the smaller the gap, the greater the self-priming height, generally taken to be 0.3 to 0.5 mm; when the gap increases, in addition to a high degree of self-absorption decreased, the pump head, the efficiency decreased. The self-priming pump impeller height with the peripheral speed u2 increases, but the maximum self-priming height, increase the number of revolutions will no longer increase the height of self-absorption, this time just to shorten the self-absorption time; when the number of revolutions When dropped, pump, self-priming height, along with the decline. Many self-priming pump structure type, in which the molten Italy SAER priming pump pumps, vacuum pumps, liquid pumps, metering pumps, gear pumps, corrosion resistant pumps, acid pumps, fire pumps to the rotational direction of the flow. Then with the right backwater hole stream water confluence, along spiral flow. Since the liquid in the volute continue to impact cascades, 65ZW25-40 pump, constantly crushed by the impeller, 65ZW30-50 pump, on air mixing with vigorous stirring, 65ZW15-30 pump, air-water mixture is generated, and continue to flow so that air and water can not be separated. The mixture was stripped in the tongue volute outlet, into the separation chamber along the short tube. 65ZW15-30 pump, pump, non-clogging sewage pump provided by the 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!