SCANPUMP CeNtrifUgAl tyPe ProCeSS PUMP SerieS NB. · SCANPUMP CeNtrifUgAl tyPe ProCeSS PUMP ... formance testing every pump before delivery to ISO 9906 Grade . ... ISO 2858 A dimensional

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SCANPUMP CeNtrifUgAl tyPe ProCeSS PUMP SerieS NB.

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Modular Construction

Series NB - quality pumps for arduous duties

Rugged designs, careful manufac-turing and strict quality control ensure long operating lifetimes.

B-10 bearing life exceeds 50,000 hours at capacity giving highest bearing loading within recommended operating range for each pump size.

Long seal lifetimes can be expected due to the low shaft deflections: max 0.05 mm.

NB-pumps are incorporated into the Scanpump Modular System. Pumps with the same bearing assembly size have many parts in common. This reduces spares stocking costs and simplifies the administration of spares purchasing.

Good Wear ResistanceNB-pumps are available in many material combinations, ranging from cast iron to titanium for example.

Smooth interior contours free from cavities, combined with generous corrosion allowances, make them particularly resistant to erosion and corrosion.

Simplified MaintenanceMaintenance has been facilitated by good design.Shaft seals and bearings, for example, can easily be replaced by exchanging the seal cartridge and bearing assembly modules.

The pumps are normally fitted with spacer-couplings, permitting back-pull out of the rotor assembly from

Skillfull designs and production accu-racies have led to high efficiencies, exceeding 83% for the larger pumps. On continuous duties a few years service may easily recover the full capital cost of the pump by energy savings alone, even for the medium-sized units.

Efficiencies are guaranteed by per-formance testing every pump before delivery to ISO 9906 Grade �.

Good Efficiencies

Reliability

Series NB

3

Typical applicationsChemical process industries - corro-sive chemicals, light slurries, etc. Pulp Mills - Liquors, chemicals, etc. Paper Mills - Thin stock, backwater, water, chemicals.

StandardsISO 2858A dimensional standard only, for horizontal centrifugal pumps with 16 bar pressure rating.

ISO 5199This is a design specification for pumps in process industry applications. Seve-ral quality features are specified, e.g. maximum shaft deflection, vibration level, bearing life and corrosion re-sistance. The end user therefore has a warranty for the pump´s reliability.

Pumps for severe operations and with a larger ISO-standard of measurement than 2858 can be supplied in various material.

Regarding smaller motors, it is an advantage if the motor is flanged directly against the bearing assembly.

Series NB

Range of ApplicationsNB-pumps are available with closed (shrouded) or semi-open impellers. They are therefore suitable for clean and solids-bearing liquids, except where risk of clogging exists due to large solids or high concentrations of fibrous material.

Installation in the chemical industry, Akzo Nobel, Bohus in Sweden. The pump is

mounted on a concrete foundation.

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CasingSmooth internal contours and the eli-mination of cavities at the periphery of the casing cover have virtually eliminated the risks of localised wear occuring. Generous wall thicknesses give high resistance to corrosion and erosion.

The casing cover gasket is ”con-fined”, eliminating the possibility of it blowing out due to the internal pressure.

The suction is protected by a ca-sing wear ring, or wear disc in pumps fitted with semi-open impellers.

Impeller Impellers are either closed or semi-open type.

Pumps built on Bearing Assembly Size 1 have impellers which are threaded onto the pump shaft, and a shaft sleeve sealed off with an O-ring. For pumps on the larger bearing assemblies, the impellers are normally secured to the shaft by screw(s) and a key, but threaded impellers are also available as a stan-dard alternative for Bearing Assembly Sizes � and 3.

Materials Standard mat.comb. Code 031) 26 01 081) 24 25 27 32 51

Pump casing Cast iron Stainless Cast iron Nodular Stainless Stainless Stainless Nickel Titanium 01�0 steel �3�3 01�0 iron 0717 steel �3�� steel �390 steel �56� alloy 6371 �890

Impeller Stainless Stainless�) Cast iron Stainless�) Stainless Stainless Stainless Nickel Titanium steel �3�3 steel �3�3 01�0 steel �3�3 steel �3�� steel �390 steel �56� alloy 6371 �890

Shaft sleeve Stainless Stainless Stainless Stainless Stainless Stainless Stainless Nickel Titanium steel �3�� steel �3�� steel �3�� steel �3�� steel �3�� steel �56� steel �56� alloy 6371 �890

Shaft Stainless Stainless Stainless Stainless Stainless Stainless Stainless Stainless Stainless steel �3�� steel �3�� steel �3�� steel �3�� steel �3�� steel �3�� steel �3�� steel �3�� steel �3��

1) For semi-open impellers use material code 05 and 09 �) Semi-open impellers material �3��.

All shafts are fitted with a replacea-ble shaft sleeve.

Shaft SealThe shaft seal can be of many types: single or double mechanical seal, gland packing or dynamic seal. Mechanical seals and gland packings are contained in a seal cartridge, which is part of the modular system. Like the bearing assemblies, there are therefore only five sizes of seal cartridges.

NB-pumps can be fitted with virtually any mechanical seal or packed gland arrangement. For single mechanical seals Scanpump PSI, Pump Seal Integration, are used. We guarantee perfect conditions for the seal.

MaterialsBased on many years of field opera-tional experience and tests from our own corrosion laboratory, we have selected a range of standard material combinations to suit a wide variety of applications (see table below).

Scanpump Equivalent gradesmaterial France Germany UK USA Chemical Composition

01�0 Ft�0D GG�0 Gr. ��0 A�8/30B Cast iron0717 FGS �00-1� GGG-�0 Gr. ��0/1� A536/60-�0-18 Nodular iron�3�1 Z15 CN 16-0� 1.�057 �31 S�9 AISI �31 17Cr �Ni 0.�C�3�� - 1.��60 - AISI 3�9 ��Cr 5Ni 1.5Mo 0.10C�3�3 Z6 CND 18-1�-M 1.��08 316 C16 A7�3/CF-8M 18.5 Cr 1�Ni 3Mo 0.07C�390 Z3 CNUD �6.5-M - - A7�3/CD-� M Cu �5Cr 5.8Ni �.8Mo �.5Cu 0.05C�56� Z� NCDU �5.�0 1.�539 - UNSN 0890� �0Cr �5Ni �.5Mo 1.6Cu 0.0�5C�56� Z6 NCDU �5-�0-0�M - 33� C11 A7�3/CN-7 M �0Cr �5Ni �.5Mo 3.5Cu 0.06C6371 - �.�537 - A�9�/CW-1� MW 16.5Cr 56Ni 17Mo �.5W 6Fe�890 - - - B367 Gr.C-3 Titanium

LanternThis is a separate component linking the bearing assembly to the casing. It is a rigid design with large openings to prevent the accumulation of dirt or liquid. The casing cover is attached to the lantern with screws to facilitate the dismantling and assembly of the rotor unit.

Bearing AssemblyThe bearing assemblies are the base of the Scanpump Modular System.

All bearing assemblies have angu-lar contact ball bearings at the coup-ling end as thrust bearings, and deep groove ball or roller bearings as radial bearings. This combination gives the best lifetime expectancy.

The axial position of the rotor can be adjusted by displacing the th-rust bearing housing in the bearing bracket. The clearance between a semi-open impeller and its wear disc can therefore be easily adjusted to maintain the rated efficiency.

Shaft and Shaft SleeveThe standard shaft material used is stainless steel �3��.

Design Features

Series NB

5

Impeller Fixing - Bearing Assemblies D and F Impeller fixing by screw and key is standard on all bearing assembly sizes except the smallest one. The larger sizes 4 and 5 have two and three screws respectively.

Impeller Fixing - Bearing Assemblies EFor Bearing Assembly size 1 and for all pumps of Titanium, the impellers are threaded onto the shaft. This is also an optional alternative for bearing assembly sizes 2 and 3.

Semi-open impellersSemi-open impeller and replaceable wear disc (X) are available for some of the NB-pumps, see also page 7.

ImpellerClosed orsemi-open tohave the best efficiency for each application

Replaceablewear ring orwear disc

Confined gasket

Max. deflection 0,05mm at seal position

Large rubber thrower-perfect sealing in stationaryor rotating conditions

Shims for adjustment of impeller/wear disc clearance

Smooth contours andno cavities whereerosion could start

Shaft Seal in Cartridgeallows for full flexibility, with ABS PSI cartridge as first choice our Pump Seal Inte-gration leads to perfect con-ditions for the seal

X

Series NB

1 2 3 4 5

6

1 � 5 10 50 100 l/s

� 5 10 50 100 500 1000 m /h

m

100

50

�0

30

�0

10

5

�

3 3

32/25-20

50/32-20

100/80-16

125/100 -26

125/100 -32

125/80 -26

125/80-32

300/250-60

200/150-48

150/125-40

200/150-40

200/150-32

200/150-26

100/65-2680/50 -26

125/100-40

150/125-32

80/50 -32

65/40-26

100/65-20

125/100-20

80/65-16

65/50-16

50/32-16

40/32-20

50/32-26

65/40-32

80/50-2065/40-20

100/65-32

150/125-26

1 � 5 10 50 100 l/s

3

40/32-20

50/32-16

50/32-26 65/40-26

65/40-32 80/50-32

80/50-26100/65-26

100/65-32

65/50-1680/65-16

100/80-16

125/100-20

125/100-32

150/125-26

125/80-26

125/80-32

125/100-26

100/65-2032/25-2065/40-20

�00 m

100

50

�0

30

�0

15

� 5 10 �0 50 300 500m /h100

80/50-20

50/32-20

Bearing Assembly Sizes

Series NBTe

chn

ical

Dat

a

Capacity �-1000 m3/h

Head 30-160 m

Temperature Max. 190°C (max. �80°C for hot oils) Pressure PN10/PN16 (for higher pressure ratings ratings, refer to separate brochure) Specification ISO 5199 ”Technical Specification for centrifugal pumps, Class II”

Dimensions ISO �858 Flanges ISO 7005 PN10 or PN16 (BS �50�) or ANSI

Lubrication Grease. Optional alternative - oil.

Type Designations

3000 rpm

1500 rpm

Pump serie Inlet dia (mm)

Outlet dia (mm)

Impeller dia (cm)

NB 80 / 50 -26

7

L1

DN1

DN2

g f

B2

z

h1

h2

DN1

DN2

g f q

B1L1

h1

z

h2

Pumps with BearingAssembly Sizes 1-3

Pumps with BearingAssembly Sizes 4 and 5

Baseplate of concrete or fabricated steel

Pump ISO- Bearing DN1 DN2 h1 h2 g f B2* L1* z* Weight**Type designation Assy. max. max. max. kg

NB 3�/�5-�0 - 3� �5 160 �00 65 390 �75 11�0 150 56NB �0/3�-�0 - �0 3� 13� 180 80 385 3�0 1�50 1�0 53NB 50/3�-16 x 50-3�-160 50 3� 13� 160 80 385 3�0 1�50 1�0 50NB 50/3�-�0 x 50-3�-�00 50 3� 160 180 80 385 3�0 1�50 150 53NB 65/50-16 x 65-50-160 1 65 50 13� 160 80 385 3�0 1�50 1�0 5�NB 65/�0-�0 x 65-�0-�00 65 �0 160 180 100 385 �00 13�5 150 57NB 80/65-16 80-65-160 80 65 160 180 100 385 �00 13�5 150 53NB 80/50-�0 x 80-50-�00 80 50 160 �00 100 385 �00 13�5 150 60

NB 50/3�-�6 x 50-3�-�50 50 3� 180 ��5 100 630 1370 160 8�NB 65/�0-�6 x 65-�0-�50 65 �0 180 ��5 100 630 1370 160 85NB 65/�0-3� 65-�0-315 65 �0 �00 �50 1�5 635 1560 �35 105NB 80/50-�6 x 80-50-�50 80 50 180 ��5 1�5 630 1370 160 85NB 80/50-3� 80-50-315 80 50 ��5 �80 1�5 635 1560 �35 105

NB 100/80-16 100-80-160 � 100 80 160 �00 100 500 630 1370 180 75NB 100/65-�0 x 100-65-�00 100 65 180 ��5 100 635 1560 �55 85NB 100/65-�6 x 100-65-�50 100 65 �00 �50 1�5 635 1560 �35 85NB 1�5/100-�0 1�5-100-�00 1�5 100 �00 �80 1�5 635 1560 �35 95NB 1�5/80-�6 x 1�5-80-�50 1�5 80 ��5 �80 1�5 635 1560 �35 110

NB 100/65-3� x 100-65-315 100 65 ��5 �80 1�5 635 1730 �35 1�5NB 1�5/100-�6 x 1�5-100-�50 1�5 100 ��5 �80 1�0 890 1730 ��5 1�0NB 1�5/80-3� x 1�5-80-315 1�5 80 �50 315 1�5 890 1730 ��5 165NB 1�5/100-3� x 1�5-100-315 1�5 100 �50 315 1�0 890 1730 �00 170NB 1�5/100-�0 x 1�5-100-�00 1�5 100 �80 355 1�0 890 1970 330 190

NB 150/1�5-�6 x 150-1�5-�50 150 1�5 �50 355 1�0 890 1730 �00 155NB 150/1�5-3� x 150-1�5-315 3 150 1�5 �80 355 1�0 530 890 1970 330 �00NB 150/1�5-�0 x 150-1�5-�00 150 1�5 315 �00 1�0 890 1970 �95 �30

NB �00/150-�6 x �00-150-�50 �00 150 �80 375 160 890 1970 330 190NB �00/150-3� x �00-150-315 �00 150 �80 �00 160 890 1970 330 �15NB �00/150-�0 x �00-150-�00 �00 150 315 �50 160 890 1970 �95 �60 x) Semi-open impeller available.*) Varies with motor size and baseplate material **) Pump only

Baseframe for concreting in Pump Bearing DN1 DN2 h1 h2 g f q B1* L1* z WeightType Assy. kg**

NB �00/150-�8 � �00 150 355 �50 165 737 353 660 �300 �00 �00NB 300/�50-60 5 300 �50 �50 675 �00 905 �76 760 3000 �50 750

Series NB

Quality at every stage

Our continuing commitment to advanced research and development and the newest machining technology combined with a salesforce well-trained in products and appli-cations give complete satisfaction.

With this reliable background we can offer products where performance, availabi-lity and low running and servicing costs will give you the most economical solution on the market

Cost-Effective Pumping.

1700

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GB

10.

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I Head office I Scanpump AB I Tel. +46 31 83 63 00 I Fax +46 31 16 79 14 I [email protected] I www.scanpump.com I