Sewage Ejector Pump Calculator
Size ejector pumps for below-grade fixtures per UPC/IPC
Fixtures Connected
System Configuration
From basin bottom to discharge point
Pump Requirements
Minimum Pump Capacity
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Required Head
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Recommended HP
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Total DFU
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Static Head
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Friction Head
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Fitting Losses
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Code Requirement: Ejector pumps must handle 2" solids minimum. Basin must have sealed, gas-tight cover with vent connection.
Basin Sizing
Minimum Basin Size
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Recommended Capacity
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Vent Size Required
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Ejector Pump Selection Guide
Light Duty
1/3 - 1/2 HP
30-50 GPM
1-2 fixtures
Residential
1/2 - 3/4 HP
50-80 GPM
Full bathroom
Heavy Duty
1 - 1.5 HP
80-120 GPM
Multiple bathrooms
Commercial
2+ HP
120+ GPM
10+ fixtures
Installation Requirements (UPC/IPC)
Basin Requirements
- Gas-tight sealed cover
- Minimum 18" diameter
- Vent connection required
- Accessible for maintenance
Pump Specifications
- 2" minimum solids handling
- Automatic float switch
- Alarm system recommended
- Backup power for critical
Discharge Piping
- Check valve required
- Isolation valve required
- 2" minimum diameter
- Full-bore ball valve