HORIZONTAL MULTISTAGE CENTRIFUGAL PUMP
Nuton horizontal multistage centrifugal pumps are engineered to perfection with utmost care and stringent quality control at all stages to ensure a trouble free service. NHM DESCRIPTION Nuton horizontal multistage centrifugal pumps are axial suction and vertical radial delivery with threaded ports. The impellers, diffusers and shaft of these pumps are made of stainless steel and designed to deliver the best possible hydraulic efficiency. This pump is a non-self priming horizontal centrifugal pump with mechanical shaft seal and sealing is by means of a bellows mechanical seal. These pumps are powered by at any enclosed fan cooled A.C. induction motor, suitable for continuous duty. Motor stator is made of low watt loss steel laminations assembled under pressure and rigidly locked in the frame. Dynamically balanced rotor ensures vibration free and noise free operations. Shaft is made of quality stainless steel. All single-phase pumps are incorporated with thermal over load protector. These pumps require an adequate starter/motor protector control panel. Applications Industrial and domestic water pressure boosting and distribution Small farms Pumping of clean liquids in industry Car washing Hotels & Multistory Buildings Salient Features Fitted with motor protector SS4 Impellers and stage casings Designed for wide voltage fluctuations Aluminum body for better the heat dissipation Higher working pressure Sturdy and compact Pumped Liquids Thin, clean, non-aggressive and non-explosive liquids without solid particles or fibers IMPORTANT NOTES Pump should not be operated dry. Install dry run prevent to protect the pumpset from dry running. Use appropriated size, good quality cable and starter / protection devices. Use low fiction good quality pipes. The pipe diameters must never be smaller than the pump connections. Install pump according to our recommended Head range. Reduce number of ends, elbows, T-bends as much as possible in the pipe line. Pump should be run for few minutes at least once in 2 days to prevent from seizing. Use frictionless quality foot valve for Horizontal Multistage Centrifugal Pumps. Avoid fatal electrical shock injury by disconnection power before working on or around the pumping system. Only technically qualified personnel must perform the works complying with local electricity rules and regulations. To reduce the risk of electrical shock operation, an appropriate earthing is mandatory. The performance data and curves are at rated voltage and only indicative. Pipe sizes mentioned in inches are nominal pipe sizes and are nearest conversion of mm. All pumps are only suitable for pumping clear, cold, fresh, nonaggressive, non-explosive water without abrasives, solid particles or fibers.
NHM CHARACTERISTICS OF PUMPED LIQUIDS a b c d e f g h i Temperature Permissible amount of sand Chlorine ion density Allowable solids Specific gravity Hardness (Drinking Water) Viscosity Turbidity ph 45 C (max.) 28 gm / m (max.) 5 ppm (max.) ppm (max.) 1.4 (max.) (max.) 6 2 1.75 x 1 m / Sec. (max.) 5 ppm silica scale (max.) 6.5 to 8.5 MATERIALS OF CONSTRUCTION Part Name Pumps Casing Pump Bracket Impeller Diffuser Motor Frame Shaft Mechanical Seal Base Plate Type S Cast Iron Cast Iron SS-4 SS-4 Aluminum SS-41 Carbon & Ceramic Mild Steel PERFORMANCE CURVE CONDITIONS The conditions below apply to the curves shown on the following pages. Curve tolerance are according to ISO 996, Annex-A. The performance are taken at rated voltage & rated frequency. Actual discharge depends on availability of water in Well / Tank, height of water column form the suction pipe end. The measurements were made with airless water at 2 C. When pumping liquids with a higher density than of water, motor with correspondingly higher outputs must be used. Pipe fiction losses have not been included in the performance curves & performance tables. The pipe connection threads are given as per BSP standard. The given performance are for specific materials of constructions. The main scales of the Performance curves are meter and m /h which have been given for head and flow respectively. 1
[ft] 25 [m] 8 76 72 NHM 1 5 hz ISO 996 Annexure A 68 64 2 6 56 52 48 44 4 Head 6 1 2 28 24 2 6 ST 5 16 8 5 ST 4 ST ST 4 Eff. [%] 5 25 2 1 5 5 1 2 25 5 4 45 [lpm].5 1 1.5 2 2.5 [m/h] Flow Rate MODEL K.W. H.P. Stage M /H.4.8 1 1.2 1.6 2 LPM 7 1 17 2 27 NHM-1.7.5 28 27 26 24 2 2 16 (HEAD (METERS) Discharge NHM-1.45.6 4 7 6 4 2 27 21 NHM-1.55.75 5 46 45 42 4 7 27 NHM-1..75 1 6 55 54 5 48 45 9 2 NHM-1 14
[ft] 18 [m] 57 54 NHM 2 5 hz ISO 996 Annexure A 51 16 48 45 14 42 9 6 Head 1 8 27 24 21 6 18 6 ST 5 ST 4 4 ST 9 ST 2 6 2 ST Efff. [%] 5 25 2 1 5 1 2 4 5 6 [lpm].5 1 1.5 2 2.5.5 4 [m/h] Flow Rate Discharge MODEL K.W. H.P. Stage M /H.8 1.6 2.5.5 4 LPM 1 27 42 5 58 67 NHM-2.7.5 2 19 18 16 14 11 9 7 (HEAD (METERS) NHM-2.45.6 28 27 24 2 16 14 1 NHM-2.55.75 4 7 5 1 26 21 18 1 NHM-2.75 1 5 46 44 9 26 22 16 NHM-2.9 1.25 6 55 52 46 9 1 26 19 NHM - 2
[ft] 25 [m] 8 76 NHM 5 hz 72 ISO 996 Annexure A 68 64 2 6 Head 56 52 48 44 4 6 1 2 28 6 ST 24 5 ST 2 4 ST 5 16 ST 8 4 EFF. [%] 45 4 5 25 2 1 5 1 2 4 5 6 7 [lpm].5 1 1.5 2 2.5.5 4 4.5 [m/h] Flow Rate MODEL K.W. H.P. Stage M /H.8 1.6 2.4.6 4.2 LPM 1 27 4 5 6 7 (HEAD (METERS) Discharge NHM-.55.75 29 28 27 25 22 19 NHM-.75 1 4 8 7 5 2 26 2 NHM-.9 1.25 5 47 46 44 4 7 2 25 NHM- 1.1 1.5 6 56 55 52 48 44 8 NHM- 16
[ft] 18 [m] 57 54 NHM 5 5 hz ISO 996 Annexure A 51 16 48 45 14 42 9 6 1 Head 8 27 24 21 6 18 4 2 9 6 6 ST 5 ST 4 ST ST 2 ST EFF. [%] 5 25 2 1 5 2 4 6 8 1 14 [lpm] 1 2 4 5 6 7 8 9 [m/h] Flow Rate Discharge MODEL K.W. H.P. Stage M /H 2 4 6 7 8 9 LPM 66 1 117 1 NHM-5.45.6 2 19 16 14 1 7 5 (HEAD (METERS) NHM-5.75 1 28 24 21 17 14 11 7 NHM-5.9 1.25 4 7 2 27 22 19 14 9 NHM-5 1.1 1.5 5 46 4 4 28 2 17 11 NHM-5 1.5 2 6 55 47 41 27 2 1 NHM - 5 7
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