Model NT - Single Stage Centrifugal Pumps Brochure

Centrifugal HorizontalVolute Casing Pumps Series NT Accordingto DIN EN 733With additional sizes technical requirementsaccording to DIN ISO 9905website: www.allweilerfarid.comProducts..For All Applications.ALLWEILER - FARID PUMPSProduces Various Pump Types - with production capacity of 15000 pumps yearly – for different applications:: Centrifugal pumps for irrigation, industry, agriculture, housing and drinking water. :: Multi-stage pumps, high pressure and self - priming suitable for boilers, painting units and power plants ::pumps driven by diesel engines tractors, or electric motors:: chemicals pumps from stainless steel, which are being used for acids and alkalies ::special pumps suitable for petroleum re?neries Fire ?ghting:: steam boilers:: power plants:: irrigation systems:: food and pharmaceutical: pumping system for housing ::general building and tourism villages :: chemicals & petroleum & mining , cooling &Air conditioning cycles ::drinking water stations and water treatment, sanitary drainage, mud & industrial waste water:: pumping station for irrigation and agricultural draining.12Horizontal single-stage, single-?ow volute casing centrifugal pumps with axial inlet.Series construction on the building-block principle; shaft bearing in a bearing bracket which can be provided with a supporting foot (serial equipment with pumps with bearing bracket size 585 and 700 with all other sizes available on request only). Volute casing with cast-on feet.The additional sizes NT 2/32-200, 2/40-250 and 2/50-250 are of the two-stage type, however, their outer dimensions correspond to the respective single-stage sizes according to DIN 24255. by means of the two-stage design, relatively small delivery ?ows at high delivery heads, good ef?ciencies and low NPSH values are reached. Abbreviation Series Delivery branch (1)Impeller Rated diameter Hydraulics Impeller actual diameter Shaft sealingMaterial design(1) With the two-stage additional pump sizes, the number of the stages is placed with a slash in front of the delivery branch nominal width, e.g. NT 2/32-200/01 This abbreviation is entered on the nameplate. With the two-stage additional pump sizes, the actual impeller diameter relates to the second stage.CapacityWith the sizes according to DIN EN 733, the pump capacity exceeds the required rated power considerably. By additional sizes, the performance range acc. to DIN EN is increased. Performance dataFlow Q up to 2300 m3/hDelivery head H up to 140 mTemperature of the liquid pumped t up to 160 °CInlet pressure ps (1)Outer pressure pd up to 10/16 bar (2)(1) inlet pressure plus maximum delivery head must not exceed the outlet pressure.(2) dependent on materialBranch positions and ?angesSuction branch: axialDelivery branch: radially upwardsFlanges: up to DN 150 acc. To EN 1092-2 PN 16 DN 200 and above acc. to EN 1092-2PN 10Design and series construction 3Shaft coupling and safety guardingSafety guarding according to DIN EN 294 is supplied as soon as the scope of supply includes pump, base plate and shaft coupling (acc. to DIN 740 with or without spacer element). The safety standards acc. to DIN EN 809 are met. by two grooved ball bearings acc. To DIN 625, grease-lubricated for the whole service life, bearing clearance C3. For series NT and CNT Or by oily bath with constant oiler with indicator for series NT-H and CNT-H Standard: surface-cooled, three-phase squirrel-cage motors, IM B3 type of construction , degree of protection IP 55 according to IEC standard, class F insulation. Performances and main dimensions according to DIN 42673. Diesel engine , explosion proof motor and Further drive options are possible. The following connections are provided:A1 Filling (1)B1 DrainingD1 Leakage drainM2 Pressure gaugeand, depending upon the type of shaft sealing: S1 External sealing of stuf?ng boxK1,K2 Cooling of shaft sealing E3 Venting(1) Connection A1 not provided with size 25-200. ?lling possibility at connection M2Standard: channel steel base plate.4Series NT Applicable to all material designs Admissible temperature with (2)Stuf?ng box uncooled 125°CStuf?ng box cooled 160°CMechanical seal uncooled 140°CAdmissible internal pump pressure with:Design with stuf?ng box Sizes for bearing bracket sizes 228 and 360 = 16 barSizes for bearing bracket sizes 470, 530 and 585 = 10barDesign with unbalanced mechanical seal:All sizes, except two-stage additional sizes = 10 barTwo-stage additional sizes = 16 barAdmissible inlet pressure: inlet pressure plus maximum delivery head must not exceedthe admissible internal pump pressure. (2) The permissible temperatures apply to water. The ?uids to be pumped being different the temperature limits may change.High Temperature and Pressure LimitsMaterialsDenominationVolute casingImpeller(s)DiffuserStage casingCasing coverShaftBearing bracketPart-No Material codeW1 W2 W3 W4 W51 st stage 2 nd stage102 ....230 ....----161 ....210 ....330 ...102 ....230 ....171 ....108 ....161 ....210 ....330 ...GG-25GG-20GG-25GG-25GG-251.4021GG-25GG-25G-CUAL10NIGG-25GG-25GG-251.4021GG-25GG-25ST.ST.GG-25GG-25GG-25ST.ST.316GG-25GGG-40GGG-40GG-25GG-25GG-251.4021GG-25ST.ST.ST.ST.ST.ST.ST.ST.ST.ST.ST.ST.316GG-255Combination of structurel componentsThe table below shows the combination possibilities of structural components and parts ofthe standard sizes including additional sizes.Within a vertical column, parts with identical numbers are interchangeable.The modular system allows a reduced stock keeping of spare parts.67219Sectional drawingSizes for bearing bracket sizes 360,470 and 53010Sizes for bearing bracket size 360two-stage additional sizes 11Sectional drawingSizes for bearing bracket sizes 585 ( additional size )12Pump dimensionsSizes for bearing bracket sizes 228,360,470,530 and 58513Pump dimensionsSizes for bearing bracket size 470131313131415Series Installation PlanNT with shaft coupling acc. to DIN 740 without spacer161616161617 Series NTInstallation PlanNT with shaft coupling acc. to DIN 740 without spacerfactor-h7Iapprox. Numberof holesNumberof holesMABAMB18Installation PlanNT with shaft coupling acc. to DIN 740 without spacer19gDKDNsDNdInstallation PlanNT With shaft Coupling Acc. To DIN 740 Without Spacer19208 Series NTSectional drawingSize25-160 for bearing bracket size 228 (additional size )2223NTH - CNT-H24NTH - CNT-H25NTH - CNT-H26NTH - CNT-H27Tables of dimensions Pump dimensions and auxiliary connections28NTH - CNT-H