Pump Engine Rating Tool

  • This tool helps you to estimate the engine power required for a pump application based on the work the pump will have to perform.
  • Use the diagrams below to help you specify your requirements.
  • Enter your data in the Green areas, select your options in the Yellow areas, then click the Calculate button.

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You must enter a value for all Green areas.
Select your options for all Yellow areas.
Pink areas are calculated for you.
Please Choose the Type of Scale:         USA System of Measurement    Metric     
1. Static Head
Vertical distance pump must lift water from pickup point to discharge.

Pickup point is the draw-down water level in the well, or the surface of stream or pond from which water is pumped.

Discharge level, in the case of a pivot or traveling system, is height of the sprinkler at highest point in the field.
2. Pressure Head
For open discharge to pond or canal, pressure head = 0.

For sprinkler system a fair initial estimate is 415 kPa (60 psi). Actual value varies from 275 kPa (40 psi) for a low pressure system to about 550 kPa (80 psi) for a high pressure system.
3. Friction Head
Estimate 1 m (ft) friction head per 100 m (ft) pipe run from pickup point to start of sprinkler system or to open discharge. Actual value based on pipe selection, bends, fittings.
4. Water Flow Rate
Will vary for crop, soil, terrain, and climate. To deliver 8.5 mm (1/3 in) per day to a quarter section [65 ha (160 acre)] field, estimate 63.5 L/s (1006 gpm).
5. Water Power Requirement
Power to pump required water, if pump and drive were 100% efficient.
6. Pump Efficiency
For a preliminary estimate use 0.75.
7. Pump Drive Direct-driven
Right angle drive
8. Pumping Power Requirements
9. Power for Engine Accessories and Cooling
Estimated at 5% of engine kW or hp. Your Perkins Distributor can provide this data. This varies with engine speed, altitude, and climate.
10. Estimated Engine Power

   
 
Industrial Power Selector Chart (Multilingual) - Shows basic specification details for all industrial engine models.
Industrial Power Selector Chart (Multilingual) - Shows basic specification details for all industrial engine models.
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Perkins products are available from a coast to coast distributor and dealer network. Your local dealer can provide you with easy access to engines, parts and service support.
» Learn More
Perkins products are available from a coast to coast distributor and dealer network in 100 locations. Your local dealer can provide you with easy access to engines, parts and service support.
» Learn More