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GRUNDFOS END SUCTION PUMPS GRUNDFOS END SUCTION PUMPS
GRUNDFOS END SUCTION
PUMPS
GRUNDFOS END SUCTION PUMPS
2 INTRODUCTION
A global leader in the pump industry, Grundfos has been supplying reliable, innovative end suction pumps for over 35 years, introducing many improvements in both product and application expertise.
Designed to dependably and efficiently deliver high flow rates at low to medium pressures, Grundfos end-suction pumps are suitable for a variety of applications including:
> water supply
> industrial pressure boosting
> industrial liquid transfer
> heating / district heating
> air-conditioning
> irrigation
Manufactured in ISO 9001 certified facilities, today’s range comprises a complete series of close-coupled (NB family) and long-coupled (NK family) pumps compliant with DIN EN733 or ISO2858.
All are non-self priming single stage, centrifugal pumps with axial suction port, radial discharge port and horizontal shaft.
Each has a back pull out design to facilitate removal of the motor, coupling, bearing bracket (NK / NKG) and impeller without disturbing the pump housing or pipework. This simplifies maintenance and enables servicing of even the largest pumps by a single person with a crane.
In most cases a standard Grundfos end suction pump will more than meet the requirements and many are now available on express delivery from stock.
However, for more challenging installations Grundfos has extensive experience in configuring innovative, bespoke solutions. Tailored configuration from the wide variety of proven Grundfos “modules”, as opposed to blank page custom design, ensures that risk is reduced and even the toughest applications benefit from Grundfos’ reliability and energy efficiency.
For more information on either express shipment of standard stocked models or assistance with specialised configurations please call 01525 850000 or e-mail [email protected]
PROVEN PUMPS FROM A COMPANY YOU CAN DEPEND ON
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All-stainless steel shafts = improved corrosion resistance
Standard and heavyduty bearing design
= to meet various life-time demands
Single and double seal versions available
= for handling numerous kinds of liquids
All-stainless steel/stub shaft design = improved corrosion resistance
Close-coupled design = no alignment needed
Motor supports - as a part of the delivery = for easy installation (above 7.5kW)
Close-coupled NB familyLong-coupled NK family(shown here without motor)
GRUNDFOS END SUCTION PUMPS
Grundfos offers an almost limitless range of close-coupled (NB/NBG) and long-coupled (NK/NKG) end-suction pumps, whose robustness and reliability make them ideal for use in even the most demanding environments.
COMBINING TRADITION AND FORWARD THINKING Externally solid and sturdy, internally Grundfos end-suction pumps feature many innovations and design features. These include field proven, high efficiency motors and options for advanced electronic control and communications.
SURVIVAL OF THE FITTEST Designed to deliver high integrity performance and exceptionally long service life, Grundfos cast iron end-suction pumps feature one piece volutes with an advanced cataphoretic coating. For high corrosion risk applications a range of stainless steel variants is also available.
FUNCTIONAL FEATURES Close-coupled and long-coupled pump families both feature:> 10, 16, 25 and 40 bar flange availability, for EN733 and
ISO2858 designated applications> O-ring seal between pump housing and cover, no risk
of leakage> Optimised pump hydraulics, EuP Directive 2009/125/
EC (MEI) ready> All stainless steel shaft design, improved corrosion resistance> Grundfos Blueflux® motor technology, high efficiency IE3/IE4
fixed speed or IE3/IE4 equivalent variable speed motors (IE3 equivalent over 3kW, IE4 equivalent up to 2.2kW) as standard
> ATEX certification (Zone 1, 2, 21, 22) available to enable use in areas at risk from explosive atmospheres (except “E” models)
UNSURPASSED PERFORMANCEIN ANY APPLICATION
ENERGY EFFICIENCY All Grundfos end-suction pumps are equipped as standard with motors that carry the Grundfos Blueflux® label, representing the very best from Grundfos within energy-efficient motor technology. However, motors from other manufacturers are also available upon request.
RELIABILITYBacked by comprehensive pump know-how and carefully selected materials, the Grundfos end-suction range is renowned for its outstanding reliability.
COMPLETE RANGEThe range comprises a full series of close-coupled and long-coupled end-suction pumps in both cast iron and stainless steel.
FLEXIBILITYGrundfos end-suction pumps can be configured and optimised for seamless operation in any application.
DEMANDING ENVIRONMENTSGrundfos end-suction pumps can reliably and efficiently handle even the most demanding liquids and environments.
GLOBAL REACH As a truly global supplier Grundfos can deliver local expertise in sales, service and commissioning - wherever you are.
BENEFITS IN BRIEF
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PRODUCT OVERVIEW
CLOSE COUPLED PUMP OPTIONS
Impeller: Cast iron, bronze, stainless steel*Pump housing: Cast iron, stainless steel*Wear rings: Cast iron, low-lead bronze, stainless steel*, Graflon®
Fixed speed, variable speed (external frequency converter) or variable speed (integrated frequency converter)High or premium efficiencyAnti-condensation heater MultiplugThermal protectionUndersize and oversizeSpecial voltagesEnclosure class IP55, IP56 or IP65
Types: Standard (rubber bellows), balanced O-ring, unbalanced O-ringElastomers: EPDM, Viton®, Fluoraz®, Kalrez®, HNBRFaces: Silicon carbide, carbon (resin or metal impregnated)
Technical specifications for
centrifugal pumpsClass II
Design Norm and ModelΔ
PUMP MOTOR SEAL
ISO 5199
Close coupled NB NBG
Long coupled NK NKG
EN733 ISO2858
ΔModels with integrated electronic variable speed control have suffix ‘E’ eg NBE or NBGE
*Choice of DIN 1.4408 (316) or DIN 1.4517 (DUPLEX) stainless steel
ATEX certification - NB, NK, NBG and NKG models are available with ATEX Zone 1 or 2 (gas) or Zone 21 or 22 (dust) certification. (ATEX certification does not apply to “E” models.)
IN DETAIL
MODEL GUIDE
5
LONG COUPLED PUMP OPTIONS
NB(G)/NK(G) pump families
Refer to data book for individual pumps
20-1200m3/hr 5.5-334 l/s
2-160m
-40oC to +160oC
25 bar max.
Max. Flow, Q
Max. Head, H
Liquid temperature
Operating pressure
TECHNICAL DATA PERFORMANCE AREA FOR NB/NK
Impeller: Cast iron, bronze, stainless steel*Pump housing: Cast iron, stainless steel*Wear rings: Cast iron, low-lead bronze, stainless steel*, Graflon®Heavy duty greased or oil lubricated bearings (NKG only)Vibration and temperature monitoring on bearing (NKG only)
Fixed speed, variable speed (external frequency converter) or variable speed (integrated frequency converter)High or premium efficiencyAnti-condensation heater MultiplugThermal protectionUndersize and oversizeSpecial voltagesEnclosure class IP55, IP56 or IP65
As close-coupled options plus also:Stuffing boxDouble tandem shaft seal (NKG only)Double back-to-back shaft seal (NKG only)Cartridge seal (NKG only)
PUMP MOTOR SEAL
GRUNDFOS END SUCTION PUMPS
6 MAKING THE MOST OF STAINLESS STEEL
In 1968 Grundfos was the first pump company to adopt extensive use of stainless steel within its range and today it is one of the biggest producers of stainless steel pumps.
In the most demanding applications, tough Grundfos NB close-coupled and NK long-coupled stainless steel pumps offer increased reliability and extended working life.
Industries where stainless steel versions are typically chosen include:
> Water treatment > Textiles > Aqua farming> Washing machines> Biofuel plants> Chemical industries> Marine> Pulp and paper> Power plants
All Grundfos NB/NK stainless steel end-suction pumps are excellent solutions for industrial applications where both small and large volumes of media need to be transferred or circulated. Exceptional performance when pumping clean, slightly dirty, or aggressive media is just an example of the many benefits the pumps can provide. These media primarily include:
> Drinking water> Aggressive industrial water> Swimming pool water> Seawater > Cleaning agents> Dyes > Fats and oils> Wastewater> Liquid soap> Solvents> Distillates
MAKING THE MOST OF STAINLESS STEEL
FEATURES AND BENEFITS
Optimised hydraulics in housing and impeller = free liquid flow and high efficiency
Loose flanges, cast iron or stainless steel= easy installation
All stainless steel shafts= improved corrosion resistance
Choice of 316 or DUPLEX stainless steels= maximum compatibility
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The NB/NBG/NK/NKG end suction range now comes with the new BQQE shaft seal as standard. With faces made from a new silicon carbide (SiC) material and EPDM elastomer, this seal has better general use operating properties and can be used over a wide temperature range.
> Suitable for use from -25°C to +120°C
> Recommended seal for water / glycol applications
Where pumped fluids may contain oils, which will attack and degrade EPDM, an alternative shaft seal with Viton® elastomer and called the BQQV may be selected. Please see the charts below for a comparison of BQQE and BQQV operating temperatures.
The optional BAQE shaft seal, constructed from metal impregnated carbon and SiC seal faces and EPDM elastomer also remains available. This is not suitable for use below 0°C or with glycol mixtures but due to the hard / soft combination of seal faces the BAQE seal is recommended where better dry running capabilities at start up are required. (The new BQQE or BQQV seals must not be exposed to dry running).
OPERATING RANGES OF BQQE AND BQQV WATER / GLYCOL MIXTURE COMPATIBLE SHAFT SEALS
-25-20 20
20
30
30
40
40
50
50
60 70 80 90 100 110 120-10 1010
0
Operating range of BQQE
Temperature [° C]
Glycol content [%]
NOW WITH BQQE SHAFT SEAL AS STANDARD
20
20
30
30
40
40
50
50
60 70 80 90-10 1010
0
Operating range of BQQV
Glycol content [%]
Temperature [° C]
SHAFT SEAL OPTIONS
Choice of 316 or DUPLEX stainless steels= maximum compatibility
GRUNDFOS END SUCTION DELIVERY JUST GOT QUICKERWith over 70 years experience supplying pumps, we know how important it is for you to maintain stability in your production processes and allow you to deliver to your customers on time. You need to know that when you require a pump, it will be swiftly on its way.
Grundfos is now able to offer two new options for accelerated end suction pump delivery. The first covers 36 models of EN 733 and 36 models of ISO 2858 end suction pumps and provides delivery within 4 or 8 weeks as per the chart shown opposite.
This includes:
> All sizes up to and including NB/NK 125-315 (NBG/ NKG 150-125-315) Grundfos MG (IE3), Siemens motors (IE3 and IE4): 2pole 30-55kW, 4 pole 18.5-55kW.
> Standard bearing bracket (NK/NKG) or heavy duty bearing bracket (NKG only).
The second option is the Cast Iron Range Fast Track Scheme, which covers a more limited range but provides delivery in as soon as next day. See overleaf for more details.
Quick delivery adds value to your business, and at Grundfos we have worked hard to update and optimise our supply chain and component stock to ensure faster delivery of our NB/NBG/NK/NKG end suction pumps. That means you can concentrate on what you do best – growing your business.
DELIVERY OPTIONS
8 FASTER DELIVERY
DISCHARGE PORTNOMINAL DIA (MM
IMPELLER NOMINAL DIA (MM)
REDUCED PERFORMANCE*
IMPELLERACTUAL DIA (MM)
eg. 32 - 200 . 1(ie. 90%) / 207
* If applicable
NOMENCLATURE
GRUNDFOS END SUCTION DELIVERY OVERVIEWEN733 ISO2858 NB/NK EN733 NBG/NKG ISO2858
Cast iron & 1.4408 SS 1.4517 SS Cast iron & 1.4408 SS 1.4517 SS32-125.1 50-32-125.1
4 WEEKSDELIVERED
8 WEEKSDELIVERED
32-125 50-32-12532-160.1 50-32-160.132-160 50-32-16032-200.1 50-32-200.132-200 50-32-20032-250 50-32-25040-125 65-50-12540-160 65-50-16040-200 65-40-20040-250 65-40-25040-315 65-40-31550-125 80-65-12550-160 80-65-16050-200 80-50-20050-250 80-50-25050-315 80-50-31565-125 100-80-12565-160 100-80-16065-200 100-65-20065-250 100-65-25065-315 100-65-31580-160 125-80-16080-200 125-80-20080-250 125-80-25080-315 125-80-31580-400 125-80-400N/A 125-80-400.1100-160 125-100-160100-200 125-100-200100-250 125-100-250100-315 125-100-315100-400 125-100-400125-200 150-125-200125-250 150-125-250125-315 150-125-315125-400 150-125-400
ON REQUEST
125-500 150-125-500150-200 200-150-200150-250 200-150-250150-315 200-150-315150-315.2 200-150-315.2150-400 200-150-400150-500 200-150-500
9GRUNDFOS END SUCTION PUMPS
10 END SUCTION CAST IRON FAST TRACK
Particularly in replacement situations, Grundfos understands that sometimes extra fast delivery is essential. This is why it now also offers a Fast Track scheme covering the most popular sizes and speeds of its cast iron range.
For the cost of standard Boxspeed delivery, currently £48, all orders received by 11:00am will be despatched on next day delivery. As standard all models are fitted with cast iron impellers and BQQE seals (SiC / SiC faces with EPDM elastomer). The same models of pumps fitted with bronze or 316 Stainless Steel impellers and / or BAQE seals (see page 7 for details) may also be ordered within the End Suction Fast Track scheme. In these cases please allow an extra 24 hours for configuration before despatch. See the table below for more information.
CAST IRON RANGE FAST TRACK SCHEME
PART NO. MODEL MOTOR, KW RPM
98269479 NB 40-200/217 1.5 1450
98149348 NB 50-200/210 2.2 1450
98178373 NB 65-160/177 2.2 1450
98353645 NB 65-200/219 4 1450
98175428 NB 80-200/214 5.5 1450
98042368 NB 32-125/115 1.5 2900
98769449 NB 32-125/142 3 2900
98054003 NB 32-160/151 3 2900
97925279 NB 32-160/163 4 2900
98856186 NB 32-160/177 5.5 2900
98281463 NB 32-200/190 5.5 2900
98042381 NB 32-200/206 7.5 2900
98300257 NB 32-200/219 11 2900
98127774 NB 40-125/116 2.2 2900
98701179 NB 40-125/127 3 2900
98810277 NB 40-125/139 4 2900
98490590 NB 40-160/158 5.5 2900
PART NO. MODEL MOTOR, KW RPM
98833679 NB 40-160/172 7.5 2900
98849201 NB 40-200/206 11 2900
98915632 NB 40-200/219 15 2900
97933643 NB 50-125/121 4 2900
98627328 NB 50-125/135 5.5 2900
98781395 NB 50-125/144 7.5 2900
97925281 NB 50-160/150 7.5 2900
98778278 NB 50-160/167 11 2900
98469280 NB 50-160/177 15 2900
98354130 NB 50-200/210 18.5 2900
98062906 NB 50-200/219 22 2900
97933644 NB 65-125/137 7.5 2900
98139415 NB 65-125/144 11 2900
98291563 NB 65-160/157 11 2900
98778279 NB 65-160/173 15 2900
98493076 NB 65-200/190 18.5 2900
98423647 NB 80-160/167 22 2900
CAST IRON RANGE FAST TRACK MODELS
11GRUNDFOS END SUCTION PUMPS
Faced with the increasing challenge of sourcing spares for an obsolete competitor’s pump, the UK’s leading steel radiator manufacturer turned to Grundfos and their approved MRO partner to propose a solution for their paint line pumps. A new Grundfos NKG long-coupled ISO 2858 pump with double seals was proposed and supplied, along with associated pipework and cabling modifications.
As part of the package an invertor that would ensure the 22kW pump ran at 40Hz rather than 50Hz was also provided, reducing electrical energy consumption by 50%. This resulted in a payback time for the new installation of just over 18 months, energy savings of around £17k per year and greatly improved confidence in paint line availability.
The customer is very satisfied and now discussing new end suction projects with Grundfos.
As part of their ongoing commitment to reduce energy costs, an ice cream factory belonging to one of the world’s largest FMCG companies accepted an invitation from Grundfos to conduct a Pump Audit. This revealed that some pumps were 20 years old and had been installed to run at a constant fixed speed, with flow controlled using a 40% closed discharge valve.
Originally sized at 37kW, a review of requirements showed that although site capacity had doubled since it was first established, modern replacement close coupled Grundfos end-suction pumps of only 15kW could in fact be used. This would have delivered energy savings of around £7k per year.
However, by opting to instead select variable speed Grundfos NBE pumps, the client was able to reduce running speed to 45Hz, saving a further 20% in energy costs and reducing payback to just 12 months.
END SUCTIONIN ACTION
Another chilling example of success
Radiating confidence and reducing energy
Grundfos Pumps LtdGrovebury Road, Leighton Buzzard, Beds. LU7 4TLTel: 01525 850000 Fax: 01525 850011Email: [email protected]
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Being responsible is our foundationThinking ahead makes it possible
Innovation is the essence
Grundfos (Ireland) Ltd.Unit A, Merrywell Business Park,Ballymount Road Lower,Dublin 12. D12 PW56Tel: 01-4089800 Fax: 01-4569459 Email: [email protected]
ADVICE AND ASSISTANCE Whether specifying a new project or investigating upgrades or replacement of existing pumps, Grundfos specialists are on hand to help. As specialists in pumps and pump systems we consider it our business to know all there is to know about pumping. We also consider it essential to be able to support our partners and customers wherever they are located and no matter how complex the chain of supply.
Grundfos operate directly in over 46 countries and work in close cooperation with more than 530 service partners, supported by regional and global product and application specialists.
Recognising the demands of process and facility management, Grundfos has invested heavily in upgrading its well known “WEBCAPS” online resource to develop the new GRUNDFOS PRODUCT CENTER. Easier to navigate and
now accessible from a wide variety of devices, it contains information and tools that range from pump curves and technical manuals to a sophisticated pump sizing tool and pump replacement guide, all available to you 24/7.
ALL THE INFORMATION YOU NEED, 24/7
