GPN | 3-phase / 50Hz

Heavy-duty three-phase slurry pump, driven by a 4-pole or 6-pole motor. Fitted with a chromium iron agitator, impeller and suction plate for extra durability during harsh operating conditions. Capable of pumping bigger solids at greater volumes.

Technical Data

  • Discharge bore mm: 3" BSPT,4" BSPT,6" BSPT,200 (mm)
  • Head max. m: 16,3 - 34,0
  • Capacity max. l/min: 1900 - 9000
  • Motor output kW: 5,5 - 37,0
  • Max. solid handling ø mm: 30
Performance curve

Model Colour code curve Discharge bore mm Motor output kW Head max. m Capacity max. l/min Max. solid handling ø mm
GPN35.5 3" BSPT 5,5 16,3 1900 30
GPN411 4" BSPT 11,0 19,3 3250 30
GPN415 4" BSPT 15,0 21,5 4110 30
GPN422 4" BSPT 22,0 34,0 3700 30
GPN622 6" BSPT 22,0 30,0 5000 30
GPN837 200 (mm) 37,0 24,0 9000 30

Discharge bore mm 3" BSPT
Motor output kW 5,5
Head max. m 16,3
Capacity max. l/min 1900
Max. solid handling ø mm 30

Discharge bore mm 4" BSPT
Motor output kW 11,0
Head max. m 19,3
Capacity max. l/min 3250
Max. solid handling ø mm 30

Discharge bore mm 4" BSPT
Motor output kW 15,0
Head max. m 21,5
Capacity max. l/min 4110
Max. solid handling ø mm 30

Discharge bore mm 4" BSPT
Motor output kW 22,0
Head max. m 34,0
Capacity max. l/min 3700
Max. solid handling ø mm 30

Discharge bore mm 6" BSPT
Motor output kW 22,0
Head max. m 30,0
Capacity max. l/min 5000
Max. solid handling ø mm 30

Discharge bore mm 200 (mm)
Motor output kW 37,0
Head max. m 24,0
Capacity max. l/min 9000
Max. solid handling ø mm 30
ø Discharge bore mm 80, 100, 150
Discharge Connection Threaded flange/Hose coupling
Impeller Open type impeller
Shaft Seal Double mechanical seal
Bearings Shielded ball bearings
Impeller Chromium iron casting
Casing Grey iron casting EN-GJL-200
Suction Plate Chromium iron casting
Shaft Seal Silicon carbide in oil bath
Pumping Fluid
Type of Fluid Sludge, Slurry, Liquids containing sandy mud and/or bentonite
Temperature 0-40°C
Type, Poles Induction motor, 4 poles, IP68, Induction motor, 6 poles, IP68
Insulation Insulation class E, Insulation class B, Insulation class F
Phase / Voltage 3-phase / 400V / 50Hz / d.o.l., 3-phase / 400V / 50Hz / s.d.
Motor Protector (built-in) Circle thermal cut-out
Lubrication Turbine oil (ISO VG32)
Casing Grey iron casting EN-GJL-150
Shaft Chromium-molybdenum steel (DIN 1.7220)
Cable Rubber, NSSHÖU
Dimensions in mm:
W1: lowest running water level
  • GPN35.5
  • GPN411
  • GPN415
  • GPN622
  • GPN422
  • GPN837

The GPN-series is a submersible three-phase high power and extra heavy-duty slurry pump driven by a 4-pole or 6-pole motor. It is equipped with a high-chromium cast iron agitator that mixes settled matter into suspension for pumping. The other wear parts such as the impeller and the suction plate are also made of high-chromium cast iron for extra durability. The side discharge, spiral design allows smoother passage of the sucked solid matters. The motor is cooled by a water jacket that assures efficient motor cooling even when it operates with its motor exposed to air. The use of guide rail fitting system improves convenience in the facilities such as, iron works, ready-mixed concrete plants, and wastewater treatment plants where the pump is to be installed with a fixed discharge piping.

Case studies


Slurry Wall Applications

Slurry walls are used in various construction and engineering applications where the creation of a deep, watertight, and structurally stable barrier is necessary, for example in tunnel construction to stabilize the surrounding soil and prevent water ingress during tunnel excavation.

Slurry walls are typically constructed by starting with a set of guide walls, typically 1 metre (3 ft 3 in) deep and 0.5 metres (1 ft 8 in) thick. The guide walls are constructed on the ground surface to outline the desired slurry trench and guide the excavation machinery. Excavation is done using a special clamshell-shaped digger or a hydromill trench cutter, suspended from a crane.

Once a particular length of trench is reached, a reinforcing cage is lowered into the slurry-filled pit and the pit is filled with concrete from the bottom up using tremie pipes. The heavier concrete displaces the bentonite slurry, which is pumped out, filtered, and stored in tanks for use in the next wall segment, or recycled.

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Desludging of a fish pond

10 acres of fish ponds faced the issue of decreasing water levels due to continuous sedimentation. The customer needed to remove the sludge from the ponds and while doing so, he wanted to increase the depth of the ponds. Instead of hiring excavators that would cost a lot of money and time, the customer turned to our Tsurumi partner in Hungary, Verbis.

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