... the pumping,transporting and draining of sludge and waste oil in sewers,catch basin ,sewer man-hole,septic tanks Product Dongfeng Jinba ... for pumping, transporting and draining of sludge and waste oil in sewers catch basin, sewer man-hole, septic tanks and sediments of sludge pool ... , vacuum pressure gauge, dung window, hand washing equipment and so on. Special function: Equip with powerful vacuum pipe ...