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Although many years of reform and opening up have brought rapid economic and technological development in our country, we still have some inherent deficiencies in some fields. For such products as electric diaphragm pumps, their frequency of use in China is still relatively small, and the related technologies we have got are limited. However, there are some countries in the world where such products are very powerful. Next will introduce the import of electric diaphragm pump brand. Electric diaphragm pump which brand imports 1, cast iron stainless steel DBY-100.533031450 / 0.55901503 / 8; 2, threaded 50DBY-150.7533031450 / 0.55901501 / 2; 3, threaded 50DBY-253.543031450 / 1.5901501; 4, threaded 170DBY-404.543031450 / 2.29015011 / 2; 5, the thread buckle 180DBY-506.54.53031450 /mm; 6, flange 400DBY-6584.53031450 /mm; 7, flange 400DBY-801653031450 / 5.59015080mm; 8, flange 610DBY-1002053031450 / 5.590150100mm; 610 imported electric diaphragm pump; these products are more frequently used in the international new pump category, in recent years, the membrane material is made a breakthrough, to be used in petrochemical, ceramics, metallurgy and other industries, Is characterized by no irrigation water, self-absorption ability. Applications: Painting, ceramics industry in Shandong electric diaphragm pump has occupied the absolute dominance; environmental protection, wastewater treatment, construction, sewage, fine chemicals is expanding its market share, and has other pumps irreplaceable status. Imported electric diaphragm pump works mainly are: motor through the gearbox movement, driven by the left and right ends of the plunger above the diaphragm can be achieved one after another reciprocating motion. In both the left and right pump chambers, the movement of the upper and lower four one-way ball valves is installed, resulting in a change in the volume in the working chamber, forcing the four one-way ball valves to alternately open and close, thereby continuously drawing and discharging the liquid.