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NKM-G 100 – horizontal pump DIN-EN 733, DN 100

Standardized single-stage DIN-EN 733 pump in monobloc design. 4-pole motor (1 450 rpm), DN 100 discharge / DN 125 suction. Flow rate up to 360 m³/h, head up to 36 m, motors 5,5–22 kW. GG25 cast iron, AISI 304 shaft.

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Product description

NKM-G 100 is a standardized horizontal single-stage pump in accordance with DIN-EN 733, in a close-coupled design with a 4-pole motor (1,450 rpm). Nominal discharge port diameter DN 100, suction port diameter DN 125. Flanged connection PN 16 in accordance with DIN 2533.

Volute casing made of GG25 cast iron (UNI ISO 185), shaft made of AISI 304 stainless steel. Impeller made of GG25 cast iron, dynamically balanced. Carbon/silicon carbide mechanical seal with EPDM O-rings in accordance with DIN 24960.

Totally enclosed asynchronous motor with external cooling. Protection rating IP 55, insulation class F. Power supply 400 V. Fluid temperature -10 °C to +140 °C, max. operating pressure 16 bar.

NKM-G 100 is a large industrial pump for high-flow applications. DN 100/125 enables the pumping of large volumes of liquid while benefiting from the quiet operation of a 4-pole motor. In the NKM-G close-coupled range, it is available only as a 4-pole version – the 2-pole NKP-G in DN 100 is not manufactured.

Main technical specifications

ParameterValue
Model seriesNKM-G 100 (SACI pumps)
StandardDIN-EN 733 (ex DIN 24255)
Designclose-coupled with flexible coupling
Number of poles4 poles (1,450 rpm)
DN discharge / suction100 / 125
Flow rate range Qup to 360 m³/h
Head range Hup to 36 m
Motor power P25.5–22 kW
Power supply400 V
Pumped fluid temperature-10 °C to +140 °C
Max. ambient temperature40 °C
Max. operating pressure16 bar
FlangesPN 16 DIN 2533
Motor protection ratingIP 55
Insulation classF (155 °C)
Casing materialGG25 cast iron (UNI ISO 185)
Impeller materialGG25 cast iron (bronze on request)
Shaft materialAISI 304 stainless steel
Mechanical sealcarbon/silicon carbide, EPDM, DIN 24960

Selection table – available models

ModelImpeller ØPower P2Power supply
NKM-G 100-200/200Ø 2005.5 kW400 V
NKM-G 100-200/214Ø 2147.5 kW400 V
NKM-G 100-250/250Ø 25011 kW400 V
NKM-G 100-250/270Ø 27015 kW400 V
NKM-G 100-315/300Ø 30018.5 kW400 V
NKM-G 100-315/316Ø 31622 kW400 V

For help selecting the exact model for the required flow rate and head, contact us with your Q and H requirements.

Applications

  • Industrial piping – process water, cooling circuits, large-scale process systems.
  • Water supply – main distribution networks, waterworks systems, transmission mains.
  • Heating large buildings – circulation in industrial and commercial HVAC systems.
  • Fire protection systems – main pump in fire suppression systems for large buildings.
  • Agriculture – irrigation of large areas, pumping and drainage stations.

Key benefits

  • DIN-EN 733 – standardized dimensions, interchangeable with products from other manufacturers.
  • 4-pole motor (1 450 rpm) – quieter operation, less wear, longer service life.
  • Monobloc design – compact, even at outputs of up to 22 kW.
  • Flow rate up to 360 m³/h – for high-flow applications.
  • Head up to 36 m – sufficient for most industrial systems.
  • Bronze impeller available on request – for drinking water and food processing.

Optional accessories

  • Bronze impeller GCuSn5Zn5Pb5 (version B)
  • Wear rings (Wr) – extend service life
  • Alternative mechanical seals – SiC/Viton, SiC/EPDM, bellows seals
  • O-rings: POWERseal EPDM

Is a 2-pole version of the NKM-G 100 available?

No. In the monobloc design, DN 100 is available only as the 4-pole NKM-G 100. For a 2-pole motor with DN 100, use the KDN 100 mounted on a baseplate.

What is the difference between the NKM-G 100 and the KDN 100?

The NKM-G 100 in the monobloc design is more compact and easier to install. The KDN 100, mounted on a baseplate, allows you to choose the motor, is easier to service, and offers outputs of up to 132 kW – choose it for special requirements or higher outputs.

How do I choose the right model?

Tell us the required flow rate (Q) and head (H), and we’ll recommend the model with the highest efficiency at the required operating point.

What is the warranty?

NKM-G pumps come with a 24-month warranty.

Don't see the right gasket in our offer?

We can create the perfect seal for your needs, including non-standard sizes.

Contact us

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