Booster Pump Sizing Calculator
Size water booster pumps for multi-story buildings and low-pressure applications
Building Information
Pressure Requirements
Minimum available
15 PSI flush tank, 25 PSI flush valve
System Losses
Pump Requirements
Required Pump Head
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Required Flow Rate
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Motor Horsepower
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Static Head (elevation)
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Pressure Deficit
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Total System Losses
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Booster Required?
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Note: Select pump with performance curve matching required flow and head.
System Configuration
Recommended System:
Configuration will appear after calculation.
Typical Pump Efficiencies
| Pump Size | Efficiency | Typical HP Range |
|---|---|---|
| Small (< 50 GPM) | 50-60% | 1/2 - 3 HP |
| Medium (50-150 GPM) | 60-70% | 3 - 10 HP |
| Large (> 150 GPM) | 70-80% | 10 - 50 HP |
Booster Pump System Types
| System Type | Application | Advantages | Considerations |
|---|---|---|---|
| Constant Speed | Small buildings | Simple, low cost | Less efficient, pressure fluctuation |
| Variable Speed (VFD) | Most applications | Energy efficient, constant pressure | Higher initial cost |
| Duplex/Triplex | Critical systems | Redundancy, lead-lag operation | More complex, higher cost |
| Hydropneumatic | Small systems | Simple controls | Tank space, pressure variation |