The Dab Nova and Feka Submersible pumps have been designed to lift sewage from cesspools and are capable of draining suspended solids with dimensions of up to 25 mm. the level switch allows fixed installation and guarantees automatic pump operation.‚The Dab Nova and Feka Submersible pumps have been designed to lift sewage from cesspools and are capable of draining suspended solids with dimensions of up to 25 mm. the level switch allows fixed installation and guarantees automatic pump operation.