VDL/ VDLF is vertical non-self priming multistage centrifugal pump, which is driven by a standard electric motor. The motor output shaft directly connects with pump shaft through a coupling. The pressure-resistant cylinder and flow passage components are fixed between pump head and inlet & outlet section with stay bolts. The inlet & outlet are located at the pump bottom at the same plane. Pump can be equipped with an intelligent protector to effectively prevent it from dry-running, phase loss & overload.