This submersible pump range was developed for pumping large volumes of water. The five modules of the SP Dirt range are designed for water containing coarse dirt particles up to 30 mm in size. For water that is clear or only slightly dirty, the two pumps of the SP Flat range can be used to pump out water down to a residual level of one milli-meter. The two top models of the range have an electronic level sensor which can be adjusted continuously and precisely. The contours of the devices follow the brand-specific design. Sturdy bases ensure that the pumps remain stable during use. For a long service life, all SP pumps are fitted with a ceramic slide ring sealing.