Water Handling Equipment Guide - National Wildfire Coordinating ...

APPENDIXES
B—Pressure and Flow Rates
Pump Pressures for 100-psi Nozzle Pressure
12 inch hose (high pressure)
Tip orifice size (in) 8 x 4 c a 2
Flow (gal/min) 4.7 10.5 18.7 28.7 42.1 74.7
Nozzle reaction (lb) 2.5 5.5 9.8 15.3 22.0 39.25
Loss/100 ft (psi) 0 0 1 2 5 17
Hose Nozzle above
length (ft) pump (ft)
Required Pump pressure (psi)
100 0 100 100 101 102 105 117
100 100 143 144 144 146 149 160
200 0 100 101 102 105 111 133
200 100 143 144 145 148 154 177
300 0 100 101 103 107 116 150
300 100 143 144 146 151 159 194
300 200 187 188 190 194 203 237
400 0 100 101 104 110 121 167
400 100 144 145 147 153 165 210
400 200 187 188 191 196 208 254
400 300 230 231 234 240 251 297
500 0 100 102 105 112 127 184
500 100 144 145 149 156 170 227
500 200 187 188 192 199 213 270
500 300 230 232 235 242 256 314
1,000 0 101 103 110 125 153 267
1,000 100 144 147 154 168 196 311
1,000 200 187 190 197 211 240 354
1,000 300 231 233 240 255 283 397
1,000 400 274 276 284 298 326 441
1,000 500 317 320 327 341 370 484
1,000 600 360 363 370 384 413 527
2,000 0 101 107 121 149 206 435
2,000 100 145 150 164 193 250 478
2,000 200 188 193 208 236 293 521
2,000 300 231 236 251 279 336 565
2,000 400 274 280 294 323 380 608
2,000 500 318 323 337 366 423 651
2,000 600 361 366 381 409 466 695
2,000 700 404 410 424 452 509 738
2,000 800 448 453 467 496 553 781
3,000 0 102 110 131 174 260 602
3,000 100 145 153 175 217 303 645
3,000 200 189 197 218 261 346 689
3,000 300 232 240 261 304 389 732
3,000 400 275 283 305 347 433 775
3,000 500 318 326 348 391 476 819
3,000 600 362 370 391 434 519 862
3,000 700 405 413 435 477 563 905
3,000 800 448 456 478 520 606 949
C = 30 for practical use
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