KDN 100 (2 900 rpm) – horizontal DIN-EN 733 pump, mounted on a baseplate, DN 100

Standardized single-stage pump to DIN-EN 733, mounted on a baseplate with a flexible coupling. DN 100 discharge / DN 125 suction. 2-pole. 3 casing sizes, with motor options up to 55 kW. GG25 cast iron, AISI 420 shaft.

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Product description

KDN 100 (2 900 rpm) is a standardized horizontal single-stage pump in accordance with DIN-EN 733, supplied mounted on a baseplate with a flexible coupling. The nominal diameter of the discharge connection is DN 100, and that of the suction connection is DN 125. Flange connection PN 16 in accordance with DIN 2533.

The volute casing is made of GG25 cast iron (UNI ISO 185), and the shaft is made of AISI 420 stainless steel. The impeller is made of GG25 cast iron and dynamically balanced. Standard mechanical seal: carbon/silicon carbide, with Viton O-rings, in accordance with DIN 24960. Gland packing (PTFE-impregnated ramie) available on request.

Available as a hydraulic section / wet end (bare shaft), a pump on a baseplate without a motor, or a complete assembly with motor. Casing sizes 200 and 250 are available with a 2-pole motor. Fluid temperature -10 °C to +140 °C, max. operating pressure 16 bar.

KDN 100 (2 900 rpm) is a large industrial pump with motors up to 55 kW — significantly more powerful than the enbloc NKM-G 100 (max. 22 kW). It also offers a 2-pole configuration, which is not available in the enbloc range for DN 100.

Main technical specifications

ParameterValue
Model seriesKDN 100 (2 900 rpm) (SACI pumps)
StandardDIN-EN 733 (ex DIN 24255)
DesignBaseplate-mounted with flexible coupling
Number of poles2P
DN discharge / suction100 / 125
Flow rate range Qup to 360 m³/h
Head range Hup to 87 m (2P) / up to 36 m (4P)
Motor power P25,5–55 kW (depending on configuration)
Power supply400 V
Pumped fluid temperature-10 °C to +140 °C
Max. ambient temperature40 °C
Max. operating pressure16 bar
FlangesPN 16 DIN 2533
Casing materialGG25 cast iron (UNI ISO 185)
Impeller materialGG25 cast iron (bronze on request)
Shaft materialAISI 420 stainless steel
Mechanical sealcarbon/silicon carbide, Viton, DIN 24960
Gland packingPTFE-impregnated ramie (on request)

Available pumps (bare shaft)

CasingNumber of polesBare shaft weight
KDN 100-2002P96 kg
KDN 100-2502P111 kg

The hydraulic section (4P) is identical to the NKM-G 100. Contact us for help selecting the correct casing and motor.

Applications

  • Water supply – main distribution networks, water transmission mains.
  • Industrial piping – high-volume cooling circuits, process systems.
  • Heating large buildings – circulation in industrial HVAC systems.
  • Fire protection systems – main pump in fire-fighting systems at large sites.
  • Agriculture – irrigation of large areas, pumping stations.

Key benefits

  • DIN-EN 733 – standardized dimensions, interchangeable with products from other manufacturers.
  • Motor options up to 55 kW – more than twice the maximum power of the enbloc NKM-G 100.
  • Head up to 87 m (2P) – for demanding high-pressure applications.
  • AISI 420 shaft – increased resistance to corrosion and wear.
  • Stuffing box seal – an alternative to a mechanical seal.

Delivery configurations

  • Bare shaft (code 0) – hydraulic end only, without coupling or motor.
  • Pump on baseplate without motor – pump with coupling mounted on a baseplate.
  • Complete unit (code 1/2) – pump with motor and a standard or spacer coupling.

Optional accessories

  • Bronze impeller GCuSn5Zn5Pb5 (version B)
  • Wear rings (Wr) – extended service life
  • Alternative seals – SiC/Viton, SiC/EPDM, bellows seals
  • Stuffing box packing – PTFE-impregnated ramie

What is the difference between the KDN 100 (2 900 rpm) and the NKM-G 100?

The KDN 100 (2 900 rpm) offers motors up to 55 kW (the NKM-G 100 maxes out at 22 kW), a 2-pole version (the NKM-G 100 is available only in 4P) and easy maintenance thanks to its baseplate. The KDN also features an AISI 420 shaft and Viton seals.

What is the warranty?

KDN pumps come with a 24-month warranty.

Features

Feature Value Unit
DNA = input / suction
125 DN
DNM = output / displacement
100 DN
Flow rate Q
0 to 360 m³/h
Displacement range H
0 to 87 m
Temperature of the pumped medium
-10 to 140 °C

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