The Grundfos SLV.80.100.40.EX.2.51D.C is a Cast iron 4kW, 2-pole waste water pump with SuperVortex impeller, 80mm solids handling, DN100 flanged discharge port, without sensor, EX rated. The Grundfos SL range are popular cast iron waste water pumps available with either the Grundfos S-tube (SL1 models) or SuperVortex (SLV models) imepllers. The SuperVortex impeller is ideal for waste water laden with fibrous materials, whereas the S-tube impeller is ideal for spherical solids with excellent energy efficiency. The design also features a clamp release allowing the pump to be disassembled without special tools.