From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Performance data for Nash Hytor Conical Type Lowvac vacuum pumps.
| Identifier | ExFiles\Box 122\4\ scan0151 | |
| Date | 15th March 1938 | |
| NASH ENGINEERING COMPANY (GREAT BRITAIN) LIMITED, CROYDON, ENGLAND. NOVEMBER 1937. BB 507. PERFORMANCE DATA - NASH HYTOR VACUUM PUMPS - CONICAL TYPE - LOWVAC REVISION: 1750 & 1440 SPEEDS DELETED FROM SIZE L3 15-3-1938. TABLE DATA: HEADER ROW 1: SIZE, SPEED R.P.M. HEADER ROW 2: VACUUM-INCHES OF MERCURY HEADER ROW 3: COLUMNS FOR 5, 10, 15, 20, 22, 24 with sub-columns for VOL. and H.P. SIZE L3: SPEED | 5 (VOL/HP) | 10 (VOL/HP) | 15 (VOL/HP) | 20 (VOL/HP) | 22 (VOL/HP) | 24 (VOL/HP) 1150 | 99 / 3.75 | 95 / 4.30 | 93 / 4.75 | 85 / 5.30 | 45 / 5.70 | 15 / 6.00 1050 | 86 / 2.90 | 85 / 4.00 | 83 / 4.40 | 50 / 4.60 | 21 / 4.80 | 6 / 5.10 950 | 73 / 2.30 | 60 / 3.40 | 60 / 4.00 | 32 / 3.90 | 20 / 3.90 | 10 / 4.00 SIZE L4: 1440 | 267 / 16.3 | 259 / 17.6 | 248 / 18.8 | 228 / 20.0 | 213 / 20.9 | 183 / 22.1 1150 | 217 / 9.00 | 211 / 10.0 | 203 / 11.0 | 183 / 12.0 | 172 / 12.4 | 150 / 12.9 1000 | 184 / 6.90 | 181 / 7.70 | 176 / 8.60 | 160 / 9.40 | 143 / 9.90 | 100 / 10.0 875 | 158 / 5.60 | 150 / 6.70 | 144 / 7.70 750 | 120 / 4.20 | 98 / 6.00 | 89 / 6.60 SIZE L5: 1050 | 412 / 20.6 | 400 / 23.0 | 393 / 25.0 | 376 / 26.3 | 357 / 27.0 | 311 / 27.4 950 | 373 / 16.4 | 362 / 18.4 | 359 / 20.2 | 343 / 21.9 | 321 / 22.1 | 273 / 22.5 870 | 340 / 13.0 | 336 / 15.0 | 328 / 16.9 | 300 / 18.0 | 270 / 18.4 750 | 292 / 10.0 | 290 / 11.3 | 280 / 12.8 | 254 / 14.1 | 224 / 14.8 680 | 250 / 9.20 | 250 / 10.9 | 250 / 12.0 | 215 / 13.0 640 | 226 / 8.20 | 231 / 10.0 | 231 / 11.0 SIZE L6: 850 | 715 / 36.0 | 701 / 39.0 | 684 / 42.0 | 632 / 45.0 | 592 / 45.5 | 508 / 47.0 680 | 580 / 21.7 | 558 / 24.0 | 543 / 26.0 | 515 / 29.0 | 470 / 30.0 570 | 482 / 16.2 | 470 / 18.3 | 464 / 20.5 | 424 / 22.0 530 | 440 / 14.0 | 435 / 16.3 | 430 / 18.2 480 | 360 / 12.0 | 360 / 14.6 | 351 / 17.0 SIZE L7: 800 | - / - | 1415 / 111 | 1370 / 117 | 1250 / 123 | 1170 / 126 650 | 1175 / 61.0 | 1170 / 67.0 | 1140 / 72.0 | 1050 / 76.0 | 975 / 76.0 570 | 1050 / 43.0 | 1020 / 48.0 | 1010 / 53.0 | 950 / 57.0 | 875 / 58.0 490 | 875 / 30.0 | 860 / 35.0 | 855 / 40.0 | 800 / 44.0 430 | 750 / 26.0 | 750 / 30.0 | 725 / 34.0 380 | 605 / 21.0 | 595 / 26.0 | 580 / 30.0 SIZE L8: 400 | - / - | - / - | 1680 / 73.0 | 1590 / 79.0 | 1395 / 85.0 | 1250 / 87.0 360 | 1540 / 55.0 | 1485 / 60.0 | 1420 / 66.0 | 1300 / 72.0 340 | 1455 / 50.0 | 1390 / 56.0 | 1320 / 61.0 | 1190 / 65.0 327 | 1375 / 46.0 | 1320 / 53.0 | 1250 / 58.0 | 1050 / 63.0 300 | 1220 / 41.0 | 1150 / 48.0 | 1060 / 54.0 SIZE L9: 327 | - / - | 2450 / 106 | 2400 / 115 | 2200 / 124 300 | - / - | 2240 / 90.0| 2180 / 98.0| 1960 / 106 273 | - / - | 2000 / 78.0| 1940 / 85.0| 1770 / 91.0 257 | - / - | 1820 / 75.0| 1760 / 82.0 240 | 1700 / 64.0| 1690 / 71.0| 1530 / 76.0 FOOTER: VOLUME (VOL.) IS EXPRESSED IN CUBIC FEET OF AIR PER MINUTE AT THE VACUUM REFERRED TO AT SEA LEVEL. THIS VOLUME MUST BE CORRECTED FOR ALTITUDE. | ||