CTS Index

absolute pressure (psia), 4 Affinity Laws, The, 39, 98, 99, 235

impeller diameter, 42 air aspiration, 33 alignment techniques, 145 laser alignment, 146 reverse dial indicator alignment, 145

rim and face alignment, 146 American National Standards Institute

(ANSI) pump, 58, 138 American Petroleum Institute (API)

pump, 59 American Voluntary Standards (AVS), 58

Archimedcs, 77 atmospheric pressure (ATM), 4

ballbearing, 155 roller bearing, 156 bearing temperature, 165 Bernoulli's Law/Principle, 3, 29, 54 best efficiency point (BEP), 67, 130, 203

brake horsepower (BHP), 40, 76

canned motor pump, 63 cartridge concept, 214 cast iron, 233 cavitation, 25

preventing cavitation, 35 turbulence cavitation, 34 vaporization capitation, 29 centrifugal pump, 3, 54 centrifugal volute pump, 56 chemical attack, 207 compression packing, 175 compression set, 208 corrosion, 233 corrosive liquids, 220 coupling alignment, 153 cryogenics, 220 crystallization, 219 cutwater, 47

dangerous liquids, 220 Darcy/YVeisbach formula, The, 17, 99

dial indicator, 148, 222 discharge head, 10 discharge pressure, 7 drain pipe, 239

Bachus &: Custodio formula, The, 18,100 bases, 148 bearing failure, 159 dirt and abrasion, 161 improper mounting, 160 vibration brinelling, 161 bearing lubrication, 157 grease, 158 oil, 157 bearing maintenance, 163 bearing seals, 167 mechanical seal, 167 labyrinth seal, 168 lip seal, 169 bearings, 155

driver shaft alignment, 142 dry running pump, 220 dual volute pump, 141

eccentric pipe reducer, 246

efficiency curve, 76, 80

elastomer, 189

energy (BHp) curve, 76,81

environment controls, 213

equipment alignment sequence, 153

erosion, 232

ethylene propylene, 206

external flush, 215

extrusion, 208

failure analysis, 227 family curves, 85 flow, 39,46 fluid velocity, 235 fluoroearbon, 206 friction head (Hf), 92 calculating the Hf, 97

gases, 220

gauge pressure (psig), 5 grout, 148

hard vacuum, 221

Hazen and Williams formula, The,

17,98 head, 39

head-flow curve, 76, 78 heat, 189

heat exchanger, 218

high pressure, 189,221

high speed shafts, 189

high temperature, 220

high temperature pump, 138

high velocity shaft speed, 221

horsepower, 44

hot alignment, 147

H-Q curve, see head-flow curve impeller, 3, 48

conventional impeller, 66 impeller diameter, 42 open impeller, 70 overhung impeller, 57 pump impeller, 64 semi open impeller, 71

totally enclosed impeller, 71 turbine impeller, 65 in flow pipe, 239 installation dimension, 212 internal re-circulation, 32

kinetic energy pump, 51

L/D factor, 135 lantern ring, the, 177 Laws of Similarity, The, 39

magnetic drive pump, 62 mechanical seals, 180, 184

back-to-back double seal, 196 balanced, 188 cartridge, 192 double seals, 194,218 facc-to-face dual seal, 197 single, balanced, external, 187 single, balanced, internal, 186 single, outside-mounted, unbalanced, 186 single, unbalanced, inside mounted, 185 support systems for dual seals, 198 tandem dual seal, 195 minimum requirement curve, 76 misalignment, types of, 144 motor, the, 148

negative psi, 5

net positive suction head (NPSH),

12, 54,82 net positive suction head available

(NPSHa), 13, 14 net positive suction head required

(NPSHr), 13,76,82 nitrile, 206

non-lubricating liquids, 220 non-metallic pump, 61

o-ring, 187,214

split, cracked or hard, 208 o-ring (the elastomer) failure, 204 ozone attack, 209

packing lubricant, 178 graphite, 178 mica, 178

molybdenum disulfide (molv grease), 178 Pascal's Law, 4 pcrfluorocarbon, 206 pipe strain, 149

positive displacement (PD) pump, 2, 51

pressure head (Hp), 92

determining the Hp, 96 pressure measurement, 4, 6 pressure spikes, 190 properties of water, 16 pump efficiency, 50 pump head, 5 pump installation, 147 pump maintenance files, 226 pump packing, 180 pump performance curves, 76 pump piping, 238 pump shaft, 142 pump shaft packing, 171 pumping unit, 200 pumps in parallel, 120, 122 pumps in series, 120, 124

quench and drain, 217

reciprocating action, 172 regenerative turbine pump, 65 rotary action, 173 rotary turbine, 173 running alignment, 147

seal chamber pressure, 7

seal failure, premature, 202

shaft deflection, 128

shims, 149

skin formation, 220

slurries and suspended solids, 220

slurry seal, 217

soft foot, 150

solidification, 219

specific gravity, 6

specific speed, Ns, 73

speed, 40

static head (Hs), 92

determining the Hs, 96

stopa, 171

stuffing box, 171

Submergence Laws, 243

suction bell, 241

suction bypass, 215

suction head, 10

suction lift, 10

suction pressure, 7

suction specific speed, Nss, 66

swcctzone, the, 140

synthetic fibers, 174

Teflon, 177

thermal convection tank, 198 thermal jacketed seal chamber, 216 throttling, 236

total dynamic head (TDH), 92 total head, 9 tramp flange, 104 turbine pump, 58 turbo tank, 199 turbulence, 235

vacuum, 5

vane passing syndrome, 33 vapor pressure, 24 vaporization, 220 variable elevations, 110 variable frequency drive (VFD), 39 variable resistances, 116 vegetable fibers, 171 velocity head (Hv), 92

calculating the Hv, 97 velocity head formula, 28 vertical turbine pump, 60 viscosity, 48, 157 volute type pump, 128 vortex breakers, 239

water horsepower (YVHp), 45 Watt, James 44 wear bands, 72 wear rings, 48, 233

zerk (zirk) fitting, 163

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