... underwater working pump, whose pump body is coupled directly with motor QJ submersible borehole pump is a underwater working pump, whose ... pump body is coupled directly with motor, which is widely used for delivering water from deep well ... /2HP) to 7.5Kw (10HP) Power supply: Single Phase 230 V-/+10%, 50Hz Three Phase 380 V-/+10%, 50Hz Water temperature: Up to ...