Vietnam customer purchased 8 sets WQ65-25-7 with auto coupling DN65 1.5KW Submersible Sewage Pump Description 1.5KW 25M3/H WQ Submersible Sewage Pump is a multi-purpose pump with a vortex impeller. The impeller used mainly in volute pumps. Vortex impellers pump water by the eddy flow caused by interaction with the casing, which prevents internal clogging by …