Definition of model

NISO 100-65-200/30

NISO : End suction centrifugal pump

100 : Suction diameter ( mm )

65 : Drainage diameter ( mm )

200 : Nominal diameter ( mm ) of impeller

30: Motor power ( kW )


Min inlet pressure

Min inlet pressure depends on NPSH + 0.5m safety margin + gasified pressure. It should be re-calculated the inlet pressure if one of the following happens.

  • The liquid is more warm
  • The flow exceeds the nominate value
  • Suction distance is very long or inlet pipe is very long
  • System pressure is too little
  • Inlet pressure is low.

Typical application

  • Clean, thin, non-corrosive, non-flammable, or non- explosive liquid without grain or fiber.
  • Water supply system
  • Heat, air condition system
  • Booster, constant pressure water supply
  • Firefighting, splitting system.
  • Irrigating, farming
  • Industry cooling, heater circulation, system
  • Industry transferring, drainage system


  • Non-self-priming, single stage, single suction, horizontal, axial suction and radical discharge, pump body is fixed by base.
  • Use bearing cradle, which can orientate bearing, prevent from radical vibration, improve the rigidity of rotary part.
  • Compacted shaft, use deep grove grease lubricated roller bearing.
  • Connect pump and motor with semi-flexible coupling
  • Use standard wearable mechanical seal
  • TEFC motor, size complies to IEC standard, installation type B3
  • The dimensions is conform to ISO 2858


  • Flow: Max 520m3/h
  • Head: Max 160m
  • Working pressure: Max 16 bar
  • Inlet pressure: Max 6 bar
  • Power: Max 160kW
  • liquid  temperature: -150C-1100C
  • Inlet and outlet diameter:
  1. Inlet diameter: DN50-DN200
  2. Outlet diameter: DN32-DN150


Curve conditions

  • Curves tolerance is according to ISO9906, Annex A;
  • All curves are based on the measured value of constant motor speed 2900rpm, 2950rpm, 1450rpm or 1480rpm.
  • The measurements were made with airless water at temperature of 200C. The curves apply to a kinematic viscosity of 1mm2/s ( 1 cst )


  • Back-pull-out design, without having to disturb pump body and pipelines when servicing.
  • All the models only use 4 kinds of pump shafts and bearing cover, make parts exchangeable.
  • Impeller is optimum design, inlet is enlarged, no whirlpool, deduct the water pump NPSH efficiently, which makes pump work stable with litle noise.
  • Casing and casing cover use wearing neck ring structure, which makes pump easy to maintain, makes parts work longer. The replaceable seal ring, makes pump work efficiently in a long time.



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