Three-phase slurry pumps, in cast iron, with a built-in agitator to stir and mix settled matters. Heavy duty design including side discharge, spiral casing, water cooling jacket and a 4 pole motor for increased wear resistance.
| Model | Colour code curve | Discharge bore mm | Phases | Motor output kW | Head max. m | Capacity max. l/min | Max. solid handling ø mm |
|---|---|---|---|---|---|---|---|
| NKZ3-C3 |
1
|
3" BSPT | 3 | 2,2 | 12,6 | 930 | 30 |
| NKZ3-D3 |
2
|
3" BSPT | 3 | 3,7 | 17,0 | 1540 | 30 |
| NKZ35.5 (NKZ3-80H) |
3
|
3" BSPT | 3 | 5,5 | 24,9 | 1530 | 20 |
| NKZ411 (NKZ3-100H) |
4
|
4" BSPT | 3 | 11,0 | 28,8 | 2440 | 20 |
| Discharge bore mm | 3" BSPT |
| Phases | 3 |
| Motor output kW | 2,2 |
| Head max. m | 12,6 |
| Capacity max. l/min | 930 |
| Max. solid handling ø mm | 30 |
| Discharge bore mm | 3" BSPT |
| Phases | 3 |
| Motor output kW | 3,7 |
| Head max. m | 17,0 |
| Capacity max. l/min | 1540 |
| Max. solid handling ø mm | 30 |
| Discharge bore mm | 3" BSPT |
| Phases | 3 |
| Motor output kW | 5,5 |
| Head max. m | 24,9 |
| Capacity max. l/min | 1530 |
| Max. solid handling ø mm | 20 |
| Discharge bore mm | 4" BSPT |
| Phases | 3 |
| Motor output kW | 11,0 |
| Head max. m | 28,8 |
| Capacity max. l/min | 2440 |
| Max. solid handling ø mm | 20 |
| ø Discharge bore mm | 80, 100 |
| Discharge Connection | Threaded flange/Hose coupling |
| Impeller | Open type impeller |
| Shaft Seal | Double mechanical seal |
| Bearings | Shielded ball bearings |
| Impeller | Ductile iron casting EN-GJS-700-2, Chromium iron casting |
| Casing | Grey iron casting EN-GJL-200 |
| Suction Plate | Grey iron casting EN-GJL-200, Ductile iron casting EN-GJS-700-2 |
| Shaft Seal | Silicon carbide in oil bath |
| Type of Fluid | Liquids containing sandy mud, Sand carrying water |
| Temperature | 0-40°C |
| Type, Poles | Induction motor, 4 poles, IP68 |
| Insulation | Insulation class E, Insulation class B |
| Phase / Voltage | 3-phase / 400V / 50Hz / d.o.l. |
| Motor Protector (built-in) | Circle thermal cut-out |
| Lubrication | Turbine oil (ISO VG32) |
| Casing | Grey iron casting EN-GJL-150 |
| Shaft | Stainless steel EN-X30Cr13 |
| Cable | Rubber, NSSHÖU |
| Model | A | A1 | B | B1 | D | H | W1 | d |
|---|---|---|---|---|---|---|---|---|
| NKZ3-C3 | 467 | 405 | 371 | 249 | 370 | 664 | 225 | 80 |
| NKZ3-D3 | 467 | 405 | 371 | 249 | 370 | 664 | 225 | 80 |
| NKZ35.5 (NKZ3-80H) | 491 | 430 | 387 | 264 | 401 | 798 | 220 | 80 |
| NKZ411 (NKZ3-100H) | 547 | 486 | 422 | 284 | 414 | 885 | 240 | 100 |
The NKZ-series is a submersible three-phase cast iron heavy-duty slurry pump driven by a 4-pole motor. It is equipped with an agitator that assists smooth suction of settled matters. 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.
In Cologne, Germany a new subway was built near the city centre. Before construction with a tunnel boring machine could even begin, the surrounding buildings had to be stabilized by a injection of a cement suspension. This process is called jet grouting. Two shafts were installed. From here, work was carried out to stabilise the foundations of the adjacent residential buildings. Depending on the shaft, different numbers of transverse boreholes with a depth of up to 50m were drilled. The boreholes were then grouted with a cement suspension.
