Centrifugal Pumps Design and Application 2nd ed - Val S. Lobanoff, Robert R. Ross (Butterworth-Heinemann, 1992)

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Critical speed analysis. See also Vibration and noise. Curve shape, 4-6, 175, 194-196 E Efficiency crossovers, 69-70 diffuser, 181 Index 571 D estimating, 15-18, 43 high speed pumps, 183-185, Deflection, 340-342, 563 194, 222 Destaging, 144, 151-152 hydraulic turbines, 247, 254, Differential head, 3 256 Diffuser area ratio, 180 hydrodynamic size, 141-143 Diffuser casing, 223-224 pump losses, 140-141, 183 Double case pumps, 206-225 specific speed, 141 abrasives, 219 volute types, 57 applications, 208-209, 219 Erosion wear rate, 226-227 auxiliary take-off nozzles, 212 balance disk, 208 balance drum, 208 F baseplates, 218 bearings, 216, 218 Factoring law, 21-25 boiler feed, 209 casing diffuser, 222 casing inner, 210-212 G casing volute, 223-224 charge, 209 Gears, 200-202 dynamic balance, 223-224 floating ring seals, 216 foundations, 218 H impeller, 212-213 impeller deformation, 220-222 Head mechanical seals, 213 actual, 180-181 pipeline, 210 coefficient, 177, 181 rotor dynamics, 219-220 differential, 3 sag bore, 224 dynamic, 179-180 throttle bushings, 213-215 static, 179-180 waterflood, 210 theoretical, 179-180 Double-suction pumps, 77-84 velocity, 179-180 area progression, 83 vortex, 179-180 impeller, 79 High speed pumps, 173-205 nozzle layout, 79-84 Barske-type pump, 175-179 Dynamic balance, 223-224 bearings, 202-203 Dynamic head, 179-180 Brumfield criterion, 187-191
572 Centrifugal Pumps: Design and Application High speed pumps (continued) efficiency, 247, 254, 256 concentric bowl pump, 179, gas release, 271 184-185, 191-195 guide vanes, 261-271 diffuser efficiency, 181 impeller design, 257, 261-262 diffusion recovery, 181 impulse type, 246, 250 efficiency, 183-185, 194, 222 losses, 252-254 flow coefficient, 177, 180, 182 NPDHA (net positive discharge Ml emission design, 178 head available), 249 gears, 200-202 NPDHR (net positive discharge head actual, 180-181 head required), 249 head coefficient, 177, 181 operation, 279-281 head dynamic, 179-180 performance prediction, head static, 179-180 251-252, 254-255 head theoretical, 179-180 radial load, 258, 259 head velocity, 179-180 reaction type, 246, 250 head vortex, 179-180 selection process, 248, 251 high solidity impellers, specific speed, 249-250 194-196 TAEH (total available exhaust impeller diameter, 184 head), 249 impeller eye diameter, 194-195 testing, 271 -272 inducers, 187-191 TREH (total required exhaust lubrication, 203 head), 249 noise, 196 two-phase flow, 271 NPSHR, 187-190 Hydrodynamic size, 141-142 partial emission design, 178-181 pump losses, 183 I radial load, 192-193 shaft dynamics, 203-204 Impeller specific speed, 181-183 area between vanes, 39, 41 suction specific speed, 186, chemical pumps, 290, 293 189 closed, 133 Thoma cavitation parameter, collet mounting, 131-132 186 deformation at high speed, throat area, 184 220-222 volute collector, 192-194 design, 28-44 Hydraulic gradient, 139 diameter, 29, 184 Hydraulic turbines, 246-282 discharge angle, 29-30, 41, 42 application range, 248 double-suction, 79 applications, 272-279 eye diameter, 32, 194-195 BHP (developed horsepower), high solidity, 194-196 249 hydraulic turbine, 257, costs, 247-248 261-262
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CENTRIFIUGAL PUMPS Design & applica
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CENTRIFUGAL PUMPS Design & Applicat
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Contents Preface —..... —......
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ern Pumps, Mine Dewatering Pumps. W
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Stage Pumps. Single-Suction Single-
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Preface When Val and I decided to c
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CENTRIFUGAL PUMPS Design & applicat
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Part 1 Elements of Pump Design
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1 Introduction System Analysis for
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Introduction 5 Figure 1-2. The syst
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Introduction 7 mate responsibility
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Introduction 9 Figure 1-6. Maximum
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2 Specific Speed and Modeling Laws
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Specific Speed and Modeling Laws 13
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Figyre 2-7, New pump from model pum
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Impeller Design 29 Figure 3-1. Requ
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Impeller Design 31 Figure 3-4. Capa
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Impeller Design 33 Step 8: Estimate
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Impeller Design 35 Figure 3-7. Volu
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impeller Design 37 (2) 5 , as final
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Impeller Design 39 The vane develop
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Impeller Design 41 Figure 3-12. Are
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impeller Design 43 Figure 3-16. Inf
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4 General Pump Design It is not a d
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General Pump Design 4? Figure 4-1.
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General Pump Design 49 designed and
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Volute Design 51 Figure 5-1. Volute
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Volute Design 53 Figure 5-2. Radial
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Volute Design 55
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Volute Design 57 Figure 5-4. Effici
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Volute Design 59 Figure 5-5. Typica
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Volute Design 61 Figure 5-8. Univer
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Volute Design S3 Manufacturing Cons
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6 Design of Multi-Stage Casing Mult
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Design of Multi-Stage Casing 67 How
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Design of Multi-Stage Casing 69 Fig
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Design of Multi-Stage Casing 73 sec
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7 Double-Suction Pumps and Side-Suc
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Double-Suction Pumps 79 two. Experi
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Double-Suction Pumps 81 Figure 7-3.
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Double-Suction Pumps 83 LOCATION AR
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8 NPSH The expressions NPSHR and NP
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NPSH 87 Predicting NPSHR The other
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NPSH 89 Figure 8-4. Pressure loss b
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NPSH 91 SUCTION VELOCITY TRIANGLES
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NPSH 93 Figure 8-8. Performance cur
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NPSH 95 Figure 8-10. Leakage across
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NPSH 97 Figure 8-13. Plate inserts
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NPSH 99 Figure 8-17. Influence of p
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NPSH 101 Figure 8-19. Estimating K
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NPSH 103 Step 3: Determine KI* From
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Figure 8«22. Calculating NPSHA for
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NPSH 107 Figure 8-24. NPSHR cavitat
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NPSH 109 Notation KI Friction and a
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Part 2 Application
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9 by Erik B. Fiske BW/JP Internatio
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Vertical Pumps 115 Figure 9-2. Well
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Vertical Pumps 117 Figure 9-4. Subm
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Vertical Pumps 119 Figure 9-6. Inst
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Vertical Pumps 121 Figure 9-8. Barr
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Vertical Pumps 123 • Loading pump
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Vertical Pumps 125 Wet Pit Pumps Th
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Vertical Pumps 127 • Fresh water
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Vertical Pumps 129 Condensate and H
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Vertical Pumps 131 mally insulate w
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Vertical Pumps 133 Figure 9-15. Imp
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Vertical Pumps 135 checked for corr
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Vertical Pumps 137 crating paramete
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10 Pipeline Pipe line, Waterflood,
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Pipeline, Waterflood and CO 2 Pumps
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Pipeline, Waterfiood and CO 2 Pumps
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Figure 10-11. Performance change wi
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Figure 10-13. Seven-stage pump dest
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Pipeline, Waterflood and COa Pumps
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11 By Edward Gravelle Sundstrand Fl
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High Speed Pumps 175 History and De
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High Speed Pumps 177 Figure 11-2. (
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High Speed Pumps 179 some portion o
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High Speed Pumps 181 This is to say
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High Speed Pumps 183 This expressio
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High Speed Pumps 185 Figure 11-3. P
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High Speed Pumps 187 As an aside, p
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High Speed Pumps 189 Figure 11-5. I
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High Speed Pumps 191 Figure 11-7. I
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High Speed Pumps 193 Figure 11-9. R
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High Speed Pumps 195 Figure 11-10.
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High Speed Pumps 19? Figure 11-11.
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High Speed Pumps 199
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High Speed Pumps 201 Figure 11-13.
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High Speed Pumps 203 nal bearings a
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High Speed Pumps 205 Barske, U, M.,
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Double-Case Pumps 207 jected to ext
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Double-Case Pumps 209 Figure 12-3.
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Double-Case Pumps 213 ally by split
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Double-Case Pumps 215 The throttle
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Figure 12-11. pump for 4,000 psi In
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Double-Case Pumps 219 so that the t
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Doubte-Case Pumps 223 Volute Casing
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Double-Case Pumps 225 5. Survey of
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Slurry Pumps 227 An approximate com
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Slurry Pumps 229 Figure 13-2. Nomog
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Slurry Pumps 231 Table 13-2 Alloys
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Slurry Pumps 233 Figure 13-3. Class
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Figure 13-4, (A) (B) (C)
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Slurry Pumps 237 There is little to
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Figyre 13-7, (courtesy Pumps, Inc.)
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Flgyr« 13-8, with (courtesy Goulds
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Slurry Pumps 243 ing the pump speed
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Slurry Pumps 245 Where there exists
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Hydraulic Power Recovery Turbines 2
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Figure 14-14. Internally adjustable
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14-22, Flow of hydraulic recovery a
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15 by Frederic W. Buse Ingersolf-Ra
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Chemical Pumps Metallic and Nonmeta
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Driver Chemical Pumps Metallic and
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Part3 Mechanical Design
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16 Shaft Design and Axial Thrust Sh
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Shaft Design and Axial Thrust 335 S
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Shaft Design and Axial Thrust 337 W
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Shaft Design and Axial Thrust 339 T
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Shaft Design and Axial Thrust 341 b
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Shaft Design and Axial Thrust 343 K
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Double-Suction Single-Stage Pumps S
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Shaft Design and Axial Thrust 347 F
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D (with subscript) P D P s T T (wit
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Mechanical Seals 355 Figure 17-1. M
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Mechanical Seats 357 Figure 17-2B.
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Mechanical Seals 359 Figure 17-2D.
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Mechanical Seals 361 Figure 17-4. H
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Mechanical Seals 363 Pressure-Veloc
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Mechanical Seals 365 The temperatur
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Mechanical Seals 367 Figure 17-7. B
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Mechanical Seals 369 Figure 17-9. P
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Mechanical Seals 371 where C 3 = 53
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Mechanical Seals 373 Classification
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Mechanical Seals 375 Double seals m
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Mechanical Seals 377 less than 100,
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Mechanical Seals 379 Figure 17-19.
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Mechanical Seals 381 Table 17-4 Tem
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Mechanical Seats 385 steam, is to p
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Mechanical Seats 38? rather than a
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Mechanical Seals 389 Mechanical Sea
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Mechanical Seals 391 seal to work i
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Mechanical Seals 395 The measured l
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Mechanical Seals 39? Figure 17-34.
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Mechanical Seals 401 This design is
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Mechanical Seals 403 alignment, par
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Mechanical Seats 419 Figure 17-58.
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Vibration and Noise in Pumps 421 Re
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Vibration and Noise in Pumps 423 me
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Vibration and Noise in Pumps 425 in
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Vibration and Noise in Pumps 427 pr
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Vibration and Noise in Pumps 429 ot
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Vibration and Noise in Pumps 431 Fi
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Vibration and Noise in Pumps 433 fi
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Vibration and Noise in Pumps 435 pr
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Vibration and Noise in Pumps 437 up
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Vibration and Noise in Pumps 441 na
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Vibration and Noise in Pumps 443 A
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Vibration and Noise in Pumps 453 Re
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Vibration and Noise in Pumps 457 Ac
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Vibration and Noise in Pumps 461 As
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Vibration and Noise in Pumps 463 ci
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Vibration and Noise in Pumps 467 sp
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Vibration and Noise in Pumps 469 Be
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Vibration and Noise in Pumps 475 Vi
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Vibration and Noise in Pumps 489 pe
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Vibration and Noise in Pumps 491 th
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Vibration and Noise in Pumps 4S3 fo
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Part 4 Extending Pump Life
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19 by Malcolm G. Murray, Jr. Murray
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Alignment 499 Figure 19-2. Pump dam
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Alignment 501 The best designs fail
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Table 19-1 Vertical Alignment Movem
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Table 19-2 Continued Horizontal Ali
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Alignment 507 bearing motors becaus
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Alignment 509 meet results. It shou
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Alignment 511 Determination of Tole
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Table 19-3 Continued Primary Alignm
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Alignment 515 Figure 19-3 A & B. Tw
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Table 19*4 Continued Methods of Cal
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Alignment 510 parallelism/perpendic
Page 536 and 537: Alignment 521 Table 19-5 continued
Page 538 and 539: Alignment 523 3. Essinger, J. N., B
Page 540 and 541: Rolling Element Bearings and Lubric
Page 544 and 545: Roiling Element Bearings and Lubric
Page 560 and 561: Roiling Element Bearings and Lubric
Page 572 and 573: Failure Analysis Mechanical Seal Re
Page 574 and 575: Table 21-2 Causes of Seal Failures
Page 576 and 577: Mechanical Seal Reliability 561 ^mi
Page 578 and 579: Mechanical Seal Reliability 563 Sea
Page 580 and 581: Mechanical Seal Reliability 565 run
Page 582 and 583: Reliability Mechanical Seal Reliabi
Page 584 and 585: Index A thermal growth, 519-522 ver
Page 588 and 589: Index 573 inlet angle, 37 classific
Page 590 and 591: Index 575 Shaft design, 333-343 ind
Page 592: double, 52-54 velocity ratio, 50-51
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Centrifugal Pumps Design and Application 2nd ed - Val S. Lobanoff, Robert R. Ross (Butterworth-Heinemann, 1992)

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