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Specifications

Pump Model Flange Connections
Discharge Connection Sizes Suction Connection Sizes
1550 3 (76.2) ANSI 600 FF 4 (101.6) ANSI 150 FF

Performance Data

PUMP English Units 25 RPM 40 RPM 55 RPM 70 RPM 85 RPM
Piston Dia. In. Piston Area Sq. In. BPD per RPM GPM per RPM Max. Press. PSI BPD GPM BPD GPM BPD GPM BPD GPM BPD GPM
1150 2.500 4.9087 26.1908 0.7639 1400 655 19.1 1048 30.6 1441 42.0 1834 53.5 2227 64.9
3.000 7.0686 39.0137 1.1379 1057 976 28.4 1561 45.5 2146 62.6 2731 79.7 3317 96.7
3.500 9.6211 54.1680 1.5799 777 1355 39.5 2167 63.2 2980 86.9 3792 110.6 4605 134.3
4.000 12.5664 71.6537 2.0899 595 1792 52.2 2867 83.6 3941 114.9 5016 146.3 6091 177.6
4.500 15.9043 91.4708 2.6679 470 2287 66.7 3659 106.7 5031 146.7 6403 186.8 7776 226.8
5.000 19.6349 113.6194 3.3139 381 2841 82.8 4545 132.6 6250 182.3 7954 232.0 9658 281.7
  Brake Horsepower required 22 35 48 61 74
PUMP Metric Units 25 RPM 40 RPM 55 RPM 70 RPM 85 RPM
Piston Dia. mm Piston Area cm2 M3/Hr per RPM L/Sec. per RPM Max. Press. kPa M3/Hr L/Sec. M3/Hr L/Sec. M3/Hr L/Sec. M3/Hr L/Sec. M3/Hr L/Sec.
1150 64 31.669 0.1735 0.0482 9929 4.3 1.2 6.9 1.9 9.5 2.7 12.1 3.4 14.7 4.1
76 45.604 0.2584 0.0718 7291 6.5 1.8 10.3 2.9 14.2 3.9 18.1 5.0 22.0 6.1
89 62.072 0.3588 0.0997 5357 9.0 2.5 14.4 4.0 19.7 5.5 25.1 7.0 30.5 8.5
102 81.073 0.4746 0.1319 4101 11.9 3.3 19.0 5.3 26.1 7.3 33.2 9.2 40.3 11.2
114 102.608 0.6059 0.1683 3241 15.1 4.2 24.2 6.7 33.3 9.3 42.4 11.8 51.5 14.3
127 126.677 0.7526 0.2091 2625 18.8 5.2 30.1 8.4 41.4 11.5 52.7 14.6 64.0 17.8
  Kilowatts Required 16 26 36 45 55

For operation below 54 RPM, an auxiliary lubrication system is required.

RPM shown is Crankshaft speed. For Pinion Shaft speed, multiply RPM by Gear Ratio. Volumetric Rate is based on 100% Volumetric Efficiency. Brake Horsepower/Kilowatts Required is based on 85% Mechanical Efficiency.

The information and data on this sheet is accurate to the best of our knowledge and belief, but are intended for general information only. Applications suggested for the materials are described only to help readers make their own evaluations and decisions, and are neither guarantees nor to be construed as express or implied warranties of suitability for these or other applications. National Oilwell makes no warranty either express or implied beyond that stipulated in National Oilwell Standard Terms and Conditions of Sale

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IEQ Industries

P.O. Box 123 Ada, MI 49301 Phone: 800.544.9053 Fax: 888.796.2653