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
Construction
- 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
Specification
- 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:
- Inlet diameter: DN50-DN200
- 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 )
Features
- 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.
