Series NB - Вулвер

1 Series NBCentrifugal type process pumpsReliabilityGood EfficienciesModularConstructionGood GB ConstructionSeries NB - quality pumps for arduous dutiesRugged designs, careful manufac-turing and strict quality control ensurelong operating bearing life exceeds at capacity giving highestbearing loading within recommendedoperating range for each pump seal lifetimes can be expecteddue to the low shaft deflections: are incorporated into theABS Modular SystemTM. Pumps withthe same bearing assembly size havemany parts in common. This reducesspares stocking costs and simplifiesthe administration of spares Wear ResistanceNB-pumps are available in many ma-terial combinations, ranging from castiron to titanium for interior contours free fromcavities, combined with generouscorrosion allowances, make themparticularly resistant to erosion MaintenanceMaintenance has been facilitated bygood design.

2 Shaft seals and bearings,for example, can easily be replacedby exchanging the seal cartridge andbearing assembly pumps are normally fitted withspacer-couplings, permitting back-pullout of the rotor assembly from the pumpcasing without moving the designs and production accu-racies have led to high efficiencies,exceeding 83% for the larger continuous duties a few years ser-vice may easily recover the full capi-tal cost of the pump by energysavings alone, even for the medium-sized are guaranteed by per-formance testing every pump beforedelivery to ISO 9906 Grade EfficienciesReliabilitySeries NB3 Typical applicationsChemical process industries - corro-sive chemicals, light slurries, Mills - Liquors, chemicals, Mills - Thin stock, backwater,water, 2858A dimensional standard only, for hori-zontal centrifugal pumps with 16 barpressure 5199 This is a design specification for pumpsin process industry applications.

3 Seve-ral quality features are specified, shaft deflection, vibrationlevel, bearing life and corrosion resi-stance. The end user therefore has awarranty for the pump s for severe operations and with a largerISO-standard of measurement than 2858 canbe supplied in various smaller motors, it is an advantageif the motor is flanged directly against thebearing NBRange of ApplicationsNB-pumps are available with closed(shrouded) or semi-open are therefore suitable for cleanand solids-bearing liquids, exceptwhere risk of clogging exists due tolarge solids or high concentrations offibrous in the chemical industry, AkzoNobel, Bohus in Sweden. The pump ismounted on a concrete internal contours and the eli-mination of cavities at the peripheryof the casing cover have virtuallyeliminated the risks of localised wearoccuring.

4 Generous wall thicknessesgive high resistance to corrosion casing cover gasket is con-fined , eliminating the possibility of itblowing out due to the internal suction is protected by a casingwear ring, or wear disc in pumps fittedwith semi-open are either closed or semi-open built on Bearing AssemblySize 1 have impellers which arethreaded onto the pump shaft, and ashaft sleeve sealed off with an pumps on the larger bearingassemblies, the impellers are norm-ally secured to the shaft by screw(s)and a key, but threaded impellers arealso available as a standard alter-native for Bearing Assembly Sizes 2and )2601081)2425273251 Pump casingCast ironStainlessCast ironNodularStainlessStainless StainlessNickelTitanium0120steel 23430120iron 0717steel 2324 steel 2390 steel 2564alloy 63714890 ImpellerStainlessStainless3)Cast ironStainless3)StainlessStainless StainlessNickelTitaniumsteel 2343steel 23430120steel 2343 steel 2324 steel 2390 steel 2564alloy 63714890 Shaft sleeveStainlessStainlessStainlessStainle ssStainlessStainless StainlessNickelTitaniumsteel 2324steel 2324steel 2324 steel 2324 steel 2324 steel 2562 steel 2562alloy 63714890 Shaft2)StainlessStainlessStainlessStainl essStainlessStainless StainlessStainlessStainlesssteel 2321steel 2321steel 2321 steel 2321 steel 2321 steel 2321 steel 2321steel 2321steel 23211)

5 For semi-open impellers use material code 05 and 092) The shafts of Bearing Assembly Sizes 1-3 are protected from the pumped liquid. For Bearing Assembly Sizes 4 and 5: ) Semi-open impellers material 2324. All shafts are fitted with a replaceableshaft SealThe shaft seal can be of many types:single or double mechanical seal,gland packing or dynamic seals and gland packingsare contained in a seal cartridge, whichis part of the modular system. Like thebearing assemblies, there are there-fore only five sizes of seal can be fitted with virt-ually any mechanical seal or packedgland arrangement. For single mecha-nical seals ABS PSITM, Pump Seal In-tegration, are used. We guarantee per-fect conditions for the on many years of field opera-tional experience and tests from ourown corrosion laboratory, we haveselected a range of standard mate-rial combinations to suit a wide va-riety of applications (see table below).

6 ABSE quivalent gradesmaterialFranceGermanyUKUSAC hemical Composition0120Ft20 DGG20Gr. 220A48/30 BCast iron0717 FGS 400-12 GGG-40Gr. 420/12A536/60-40-18 Nodular iron2321Z15 CN S29 AISI 43117Cr 2Ni 32924Cr 5Ni CND C16A743 Cr 12Ni 3Mo CNUD M Cu25Cr NCDU 0890420Cr 25Ni NCDU 25-20-04M -332 C11A743/CN-7 M20Cr 25Ni 56Ni 17Mo 6Fe4890---B367 is a separate component linkingthe bearing assembly to the is a rigid design with large openingsto prevent the accumulation of dirt orliquid. The casing cover is attachedto the lantern with screws to facilitatethe dismantling and assembly of therotor AssemblyThe bearing assemblies are the baseof the ABS Modular bearing assemblies have angu-lar contact ball bearings at the coup-ling end as thrust bearings, and deepgroove ball or roller bearings as ra-dial bearings.

7 This combination givesthe best lifetime axial position of the rotor canbe adjusted by displacing the thrustbearing housing in the bearing brack-et. The clearance between a semi-open impeller and its wear disc cantherefore be easily adjusted to main-tain the rated and Shaft SleeveThe standard shaft material used isstainless steel grade 2321 or FeaturesSeries NB5 Impeller Fixing - Bearing Assemblies D and FImpeller fixing by screw and key is standard on allbearing assembly sizes except the smallest larger sizes 4 and 5 have two and threescrews Fixing - Bearing Assemblies EFor Bearing Assembly size 1 and for all pumpsof Titanium, the impellers are threaded onto theshaft. This is also an optional alternative forbearing assembly sizes 2 and impellersSemi-open impeller and replaceable weardisc (X) are available for some of the NB-pumps,see also page orsemi-open tohave the bestefficiencyfor eachapplicationReplaceablewear ring orwear discConfined gasketMax.

8 Deflection 0,05mm at seal positionLarge rubber thrower-perfect sealing in stationaryor rotating conditionsShims for adjustmentof impeller/wear discclearanceSmooth contours andno cavities whereerosion could startShaft Seal in Cartridgeallows for full flexibility, withABS PSI cartridge as firstchoice our Pump Seal Inte-gration leads to perfect con-ditions for the sealXSeries NB 1 2 3 4 561251050100l/s2510501005001000m/hm10050 40302010543 3 32/25-2050/32-20100/80-16125/100-26125/1 00 -32125/80 -26125/80-32300/250-60200/150-48150/125- 40200/150-40200/150-32200/150-26100/65-2 680/50-26125/100-40150/125-3280/50-3265/ 40-26100/65-20125/100-2080/65-1665/50-16 50/32-1640/32-2050/32-2665/40-3280/50-20 65/40-20100/65-32150/125-26125 1050100l/s340/32-2050/32-1650/32-2665/40 -2665/40-3280/50-3280/50-26100/65-26100/ 65-3265/50-1680/65-16100/80-16125/100-20 125/100-32150/125-26125/80-26125/80-3212 5/100-26100/65-2032/25-2065/40-20200 m100504030201525102050300500m /

9 H10080/50-2050/32-20 Bearing Assembly SizesSeries NBTechnical DataCapacity2-1000 m3/hHead30-160 mTemperatureMax. 190 C (max. 280 C for hot oils)PressurePN10/PN16 (for higher pressureratingsratings, refer to separate brochure)SpecificationISO 5199 Technical Specificationfor centrifugal pumps, Class II DimensionsISO 2858 FlangesISO 7005 PN10 or PN16(BS 4504) or ANSIL ubricationGrease. Optional alternative - Designations3000 rpm1500 rpmPump serieInlet dia(mm)Outlet dia(mm)Impeller dia(cm)NB80 /50-267L1DN1DN2gfB2zh1h2 DN1DN2gfqB1L1h1zh2 Pumps with BearingAssembly Sizes 1-3 Pumps with BearingAssembly Sizes 4 and 5 Baseplate of concrete or fabricated steelPumpISO-BearingDN1DN2h1h2gfB2*L1*z* Weight**Typedesignation 32/25-20-322516020065390475112015056NB 40/32-20-403213218080385320125012053NB 50/32-16 x50-32-160503213216080385320125012050NB 50/32-20 x50-32-200503216018080385320125015053NB 65/50-16 x65-50-160 1655013216080385320125012052NB 65/40-20 x65-40-2006540160180100385400132515057NB 80/65-1680-65-16080651601801003854001325 15053NB 80/50-20 x80-50-2008050160200100385400132515060NB 50/32-26 x50-32-2505032180225100630137016084NB 65/40-26 x65-40-2506540180225100630137016085NB

10 65/40-3265-40-31565402002501256351560235 105NB 80/50-26 x80-50-2508050180225125630137016085NB 80/50-3280-50-31580502252801256351560235 105NB 100/80-16100-80-160 210080160200100500630137018075NB 100/65-20 x100-65-20010065180225100635156025585NB 100/65-26 x100-65-25010065200250125635156023585NB 125/100-20125-100-2001251002002801256351 56023595NB 125/80-26 x125-80-250125802252801256351560235110NB 100/65-32 x100-65-315100652252801256351730235125NB 125/100-26 x125-100-2501251002252801408901730225140 NB 125/80-32 x125-80-315125802503151258901730225165NB 125/100-32 x125-100-3151251002503151408901730200170 NB 125/100-40 x125-100-4001251002803551408901970330190 NB 150/125-26 x150-125-2501501252503551408901730200155 NB 150/125-32 x150-125-315 31501252803551405308901970330200NB 150/125-40 x150-125-4001501253154001408901970295230 NB 200/150-26 x200-150-2502001502803751608901970330190 NB 200/150-32 x200-150-3152001502804001608901970330215 NB 200/150-40 x200-150-4002001503154501608901970295260 x) Semi-open impeller available.