Tuthill 1012 - Pump Selection

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Pump Selection
The above pumps are only suitable for liquids having self-lubricating properties. The table below shows the capacity and suggested
driving motor size for dierent speeds and pressures. These gures are based upon pumping a liquid of about 200 S.S.U. viscosity,
and with a 10-inch vacuum. While Tuthill pumps will develop as high as 27 inches of vacuum, it is sound engineering to reduce the
vacuum to a minimum. The speed of the pump must be reduced when handling liquids of high viscosity and the size on lines increased
to prevent cavitation, loss of capacity and high power requirements.
CAUTION
Remember that the pipeline friction increases at a rapid rate with increase in viscosity. For a given pump and motor, larger pipelines are
necessary to maintain the same pump pressure when changing from a thin liquid to a thick liquid. Viscous liquid pumping installations
are notoriously under powered, due to lack of knowledge in computing pipeline friction. Handling of viscous liquids is a special hydraulic
engineering problem, which the Engineering Department of Tuthill is well equipped to solve for you.
Consult Tuthill for selecting the proper pump, size of motor, and pipeline size for your job with the following information
• Capacity required
• Maximum and minimum liquid temperature when entering the pump
• The viscosity at the minimum temperature
• Total length of suction pipe and discharge pipe
• Suction lift and height to which the pump must force the liquid
Pump Speed 1424 RPM 960 RPM 720 RPM
Operating Pressure 10 PSI 50 PSI 100 PSI 10 PSI 50 PSI 100 PSI 10 PSI 50 PSI 100 PSI
GPM HP GPM HP GPM HP GPM HP GPM HP GPM HP GPM HP GPM HP GPM HP
1012 6 0.5 5.3 .75 4.6 1 4.3 .33 4 0.5 3.7 .75 3.3 .25 3 .33 2.7 .5
1015 12 1 11.2 1.5 10.5 2 8 0.5 7.7 1 7.3 1.5 6 .33 5.7 .75 5.3 1
1018 24.4 1.5 23.7 2 23 3 16 1 16.7 1.5 15.3 3 12 .75 11.7 1.5 11.3 2
1020 40.9 2 40.2 4 39.6 7.5 26.7 1.25 26 3 26.3 6 20 1 19.3 2 18.7 3
1022 55.4 3 54.7 5.5 54 10 37.3 2 36.7 4 36 7.5 28 1.5 26.7 3 25.3 4
1012 - 1022 Series Drawing
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