Grundfos Unilift AP12

Grundfos Unilift AP12 submersible drainage pumps designed for both temporary/ portable installation and permanent free-standing installation. These single-stage pumps are made mostly of stainless steel. All Unilift AP and AP Basic pumps are fitted with a plug for connection to the mains.

Grundfos Unilift AP12


  • Single stage pump with either semi-open impeller (AP12) or with vortex impeller (AP35 and AP50).
  • Fitted with a stainless steel sleeve for cooling during operation.
  • Grundfos Unilift AP12 Supplied with or without float switch, for automatic or manual operation. Pump with an “A” in the type designation are fitted with a float switch. The outlet is positioned at the top of the pump.
  • Unilift AP Basic Pumps are single-stage pumps (AP35B, AP50B) with vortex impeller.
  • Made of stainless steel, with a compsite baseplate.
  • The Unilift AP Basic range designed for submerged operation, either free-standing on the base plate or installed using an auto coupling.
  • The pump inlet designed to prevent to large particles from entering the pump.
  • The base plate clipped on by means of four clips hidden under the composite ring at top of the pump housing. The ring prevents dirt from sticking to the clips.

Application :

  • Water and rainwater in hortiulture
  • Water from rivers and lakes
  • Rainwater, drainage water and water from flooding
  • Water for filling/emptying containers, ponds, tanks, etc.
  • Effluents from shower, washing machines and sinks below sewer level
  • Pool water
  • Ditch drainage water
  • Groundwater (lowering applications)
  • Domestic effluents from septic and sludge-treating systems
  • Liquids containing fibres from light industry, laundries, etc.
  • Effluents from viaducts, underpasses, etc.
  • Drainage water from garage sprinkler systems

Features and Benefits :

Unilift AP is for permanent or temporary free-standing installation. Most components are made of stainless steel. Cable fitted by means of a plug. Available in both automatic and manual versions. Single-phase versions have an integrated thermal switch.


AP 12.40.04.A1
0.4 kW
125 L/min
8 m
AP 12.40.06.A1
0.6 kW
200 L/min
8 m
AP 12.40.08.A1
0.8 kW
140 L/min
8 m
AP 12.50.11.A1
0.11 kW
330 L/min
8 m

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