large capacity sewage pump 1,10 years sewage pump esperience 2 ... 3 ISO&CE 4,SKF brearing WQ Non-clogging with large capacity sewage pumpa) Caliber: DN25-DN500mmb) Flow:8-2600m3/hrc ... test. 3,main usage :mainly used for municipal project, buildings, industrial blow-off, hotels, hospitals, civil air defense, mine, etc. And ...