GRUNDFOS NB/NK
END-suction range
Perfection under high demands
END-suction range
Perfection under high demands
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Grundfos NB | Close-coupled: In close-coupled
pumps, motor and pump are mounted directly
together to make one compact and space-saving unit.
Close- coupled pumps are easy to install, require no
alignment during installation and are less susceptible
to wear because of its compact design.
pumps, motor and pump are mounted directly
together to make one compact and space-saving unit.
Close- coupled pumps are easy to install, require no
alignment during installation and are less susceptible
to wear because of its compact design.
STANDARD PUMPS THAT DELIVER
ANYTHING BUT STANDARD PERFORMANCE
ANYTHING BUT STANDARD PERFORMANCE
Grundfos offers a virtually limitless range of close-coupled (NB) and long-coupled (NK) end-suction pumps,
whose sturdiness and reliability make them ideal for use in demanding environments.
The pumps feature the world-renowned EFF1 motor as a standard, and integrated frequency converters
ensure maximum efficiency at all times.
whose sturdiness and reliability make them ideal for use in demanding environments.
The pumps feature the world-renowned EFF1 motor as a standard, and integrated frequency converters
ensure maximum efficiency at all times.
Grundfos NK | Long-coupled: In long-coupled
pumps, motor and pump are mounted on a
common base frame and coupled by a coupling and
bearing bracket system. The pump can be serviced
without moving the motor, making this design ideal
for applications where large motors are employed.
pumps, motor and pump are mounted on a
common base frame and coupled by a coupling and
bearing bracket system. The pump can be serviced
without moving the motor, making this design ideal
for applications where large motors are employed.
Comprehensive range:
> More than 1 million variants of the same pump
> From 0.25 kW to 355 kW
> Capacities of up to 2000 m3/h
> Head up to 150 m
> Temperature range: up to + 140° C
> Operating pressure PN10 and PN16
> Close-coupled and long-coupled versions
> Range according to EN733 and ISO2858
> More than 1 million variants of the same pump
> From 0.25 kW to 355 kW
> Capacities of up to 2000 m3/h
> Head up to 150 m
> Temperature range: up to + 140° C
> Operating pressure PN10 and PN16
> Close-coupled and long-coupled versions
> Range according to EN733 and ISO2858
Compatible with all application areas:
> Water supply
> Industrial pressure boosting
> Industrial liquid transfer
> Irrigation
> Heating/district heating
> Air-conditioning
> District cooling
> Water supply
> Industrial pressure boosting
> Industrial liquid transfer
> Irrigation
> Heating/district heating
> Air-conditioning
> District cooling
The Grundfos end-suction range offers you energy efficient and reliable high-quality pumps that fully comply
with the EN733 and ISO2858 standards. The modular design lets you configure the pump to fit your exact
needs and avoid the efficiency drop that comes with an over-dimensioned pump.
with the EN733 and ISO2858 standards. The modular design lets you configure the pump to fit your exact
needs and avoid the efficiency drop that comes with an over-dimensioned pump.
Optimised flow geometry
The result: minimal backflow and increased energy
efficiency.
Surface details
Sometimes, looking at the surface is a good thing.
Grundfos NB/NK pumps are given cataphoresis
surface treatments, consisting of Powercron®
cathodic electrocoating and zinc phosphate coating.
Cataphoresis on the inside of the pump means a
longer lasting inside surface that keeps efficiency
high.
The result: minimal backflow and increased energy
efficiency.
Surface details
Sometimes, looking at the surface is a good thing.
Grundfos NB/NK pumps are given cataphoresis
surface treatments, consisting of Powercron®
cathodic electrocoating and zinc phosphate coating.
Cataphoresis on the inside of the pump means a
longer lasting inside surface that keeps efficiency
high.
RELIABLE PERFORMERS
FOR A VARIETY OF APPLICATIONS
FOR A VARIETY OF APPLICATIONS
The Grundfos NB/NK end-suction pumps are designed and built for industrial applications where large
volumes of water and other liquids need to be pumped from one place to another –efficiently and reliably.
Grundfos pumps are renowned for their unmatched reliability and the NB and NK pumps are no exception.
These all-round workhorses have stood the test of numerous applications under highly variable and
demanding conditions all over the world.
A variety of applications
The standard models of NB and NK pumps are suitable for a wide range of applications; however, for special
requirements a variety of customised solutions is available. For larger loads, or where extra pumps are
required for backup, several pumps can be installed in parallel.
Wide range of applications
> Process - Pumping of large volumes of water or other liquids for industrial processes
> Cooling - Cooling plants for industrial processing and air-conditioning units
> Heating - Heating systems for commercial buildings and district heating
> Water supply - Water supply and pressure boosting for all lines of industry
> Cleaning - Water supply and pressure boosting for all kinds of industrial cleaning processes
> Fire systems - Stand-by systems for in-house fire protection. The pumps can be equipped with combustion
engines independent of electrical supply
volumes of water and other liquids need to be pumped from one place to another –efficiently and reliably.
Grundfos pumps are renowned for their unmatched reliability and the NB and NK pumps are no exception.
These all-round workhorses have stood the test of numerous applications under highly variable and
demanding conditions all over the world.
A variety of applications
The standard models of NB and NK pumps are suitable for a wide range of applications; however, for special
requirements a variety of customised solutions is available. For larger loads, or where extra pumps are
required for backup, several pumps can be installed in parallel.
Wide range of applications
> Process - Pumping of large volumes of water or other liquids for industrial processes
> Cooling - Cooling plants for industrial processing and air-conditioning units
> Heating - Heating systems for commercial buildings and district heating
> Water supply - Water supply and pressure boosting for all lines of industry
> Cleaning - Water supply and pressure boosting for all kinds of industrial cleaning processes
> Fire systems - Stand-by systems for in-house fire protection. The pumps can be equipped with combustion
engines independent of electrical supply
TECHNICAL DETAILS
THAT MAKE A DIFFERENCE
THAT MAKE A DIFFERENCE
Grundfos made inside out
The Grundfos NB and NK pumps are designed and built by Grundfos in order to ensure that every technical
detail and every component fully lives up to the Grundfos standard.
Manufacture and quality control is carried out in accordance with our ISO 9001 quality manual – your
guarantee for our attention to every detail throughout the process.
In any industrial application reliability is essential. Unscheduled breakdowns can be extremely costly if vital
processes are disrupted. That is why we build the Grundfos NB and NK pumps to the highest standard.
Flexible motor programme
The Grundfos NB and NK pumps can be fitted with a Grundfos motor or a standard motor of any make. High-
efficiency EFF 1 and 2 motors or an explosion-proof variant are also available.
For applications where varying flows are the order of the day, electronically controlled variable-speed
motors are an ideal solution. A variable-speed motor enables optimization of the pump operation for
maximum efficiency, long pump life, and substantially reduced operating costs.
Meeting your needs is our job
Providing the right pump for the application is only part of the job done. In order to optimise the pump
operation to meet your needs, faultless installation with 100% correct alignment of the pump is essential.
Perfect alignment is ensured by means of a special laser alignment tool, which can be made available from
your local Grundfos service partner.
And, if you want us to, we are with you all the way – from configuration of your pump solution to the final
commissioning of the installation.
The Grundfos NB and NK pumps are designed and built by Grundfos in order to ensure that every technical
detail and every component fully lives up to the Grundfos standard.
Manufacture and quality control is carried out in accordance with our ISO 9001 quality manual – your
guarantee for our attention to every detail throughout the process.
In any industrial application reliability is essential. Unscheduled breakdowns can be extremely costly if vital
processes are disrupted. That is why we build the Grundfos NB and NK pumps to the highest standard.
Flexible motor programme
The Grundfos NB and NK pumps can be fitted with a Grundfos motor or a standard motor of any make. High-
efficiency EFF 1 and 2 motors or an explosion-proof variant are also available.
For applications where varying flows are the order of the day, electronically controlled variable-speed
motors are an ideal solution. A variable-speed motor enables optimization of the pump operation for
maximum efficiency, long pump life, and substantially reduced operating costs.
Meeting your needs is our job
Providing the right pump for the application is only part of the job done. In order to optimise the pump
operation to meet your needs, faultless installation with 100% correct alignment of the pump is essential.
Perfect alignment is ensured by means of a special laser alignment tool, which can be made available from
your local Grundfos service partner.
And, if you want us to, we are with you all the way – from configuration of your pump solution to the final
commissioning of the installation.
Shaft seal
A range of shaft seals, suitable for different liquids, liquid
temperatures, or pressure areas is available. All shaft
seals comply with the EN 12 756 standard.
The NK pumps are available for liquids up to 140°C
without need for external cooling of the seal. When
pumping liquids with a temperature from 140°C to 160°C
external cooling is necessary. Cooling is done by a
glycol fluid circulating through the shaft seal via a glycol
reservoir.
Materials
As a standard, the NB and NK pumps are equipped with
cast iron impellers. As an option, impellers made of
bronze are available.
These improve corrosion resistance when pumping
chlorinated water or other aggressive liquids. For
high-salinity water, such as brackish or seawater, or
other corrosive liquids, all-bronze versions of the pumps
are available.
Bearings
The bearings of the NB and NK pumps are designed for a
life span of minimum 20,000 hours of operation under
normal load. The bearings are greased for life.
A range of shaft seals, suitable for different liquids, liquid
temperatures, or pressure areas is available. All shaft
seals comply with the EN 12 756 standard.
The NK pumps are available for liquids up to 140°C
without need for external cooling of the seal. When
pumping liquids with a temperature from 140°C to 160°C
external cooling is necessary. Cooling is done by a
glycol fluid circulating through the shaft seal via a glycol
reservoir.
Materials
As a standard, the NB and NK pumps are equipped with
cast iron impellers. As an option, impellers made of
bronze are available.
These improve corrosion resistance when pumping
chlorinated water or other aggressive liquids. For
high-salinity water, such as brackish or seawater, or
other corrosive liquids, all-bronze versions of the pumps
are available.
Bearings
The bearings of the NB and NK pumps are designed for a
life span of minimum 20,000 hours of operation under
normal load. The bearings are greased for life.
Maintenance made simple and cost effective
Both models allow for removal of the impeller
without dismantling the pump housing or pipe
work.
On the NB close-coupled models, the motor and
the impeller can be removed as one unit without
dismantling the pump.
On the long-coupled NK pump models, the use of
a spacer coupling enables the motor to remain in
place when the impeller and shaft section is
removed for maintenance and service checks.
This eliminates the need for realigning the
installation afterwards.
Both models allow for removal of the impeller
without dismantling the pump housing or pipe
work.
On the NB close-coupled models, the motor and
the impeller can be removed as one unit without
dismantling the pump.
On the long-coupled NK pump models, the use of
a spacer coupling enables the motor to remain in
place when the impeller and shaft section is
removed for maintenance and service checks.
This eliminates the need for realigning the
installation afterwards.
- Authorized Distributor of
- Grundfos Pumps India Private Limited
- Tranter India Private Limited
- Raje-Dia Pumps Private Limited
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generation of horizontal
multistage pumps
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storm water pumps helps
BigB's house from
flooding?
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Pressure and Reliable
Drainage Pumps
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Increasing performance
in Industrial Process
May 10, 2010
Announcing Seminars on
"Discovering the efficient
way of pumping"
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Grundfos Solutions |
Increasing performance
in Plant Service Systems
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Grundfos Dosing &
Disinfection | Get the
right mix
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Solutions | Fire protection
you can count on
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Grundfos in Burj Khalifa |
A towering achievement
Grundfos pumps secure
clean water for thousands
of people in Haiti
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heat exchangers |
Bringing efficiency to heat
transfer
February 4, 2010
TRANTER Econocoil | An
efficient & versatile light
duty plate type heat
exchanger
January 29, 2010
TRANTER | Gasketed and
welded heat exchangers
for every need
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submersible drainage
pumps
January 14, 2010
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range of in-line choices
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range | Perfection under
high demands
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PRO - Effective and safe
disinfection with Chlorine
Dioxide
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broken
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