Application Requirements
NAPCO pumps deliver 60–158 GPM depending on model and pressure
Maximum rated pressure: 100 PSI
Corrosive or food-grade applications require stainless steel
This calculator provides estimates based on tested water performance data. Higher viscosity fluids may require lower RPM. For application-specific sizing with fluids other than water, contact NAPCO engineering.
Recommended Pumps
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Performance Reference Data
Tested with water (specific gravity 1.0) at ambient conditions. Higher viscosity liquids may require lower pump RPM.
2″ Pump (PA200S / PA200C) — 190 RPM
| PSI | GPM | Brake HP |
|---|---|---|
| 10 | 69 | 0.65 |
| 30 | 65 | 1.8 |
| 50 | 64 | 3.2 |
| 70 | 62 | 4.0 |
| 100 | 60 | 5.7 |
3″ Pump (PA300S / PA300C) — 280 RPM
| PSI | GPM | Brake HP |
|---|---|---|
| 10 | 158 | 1.5 |
| 30 | 147 | 4.2 |
| 50 | 145 | 6.9 |
| 70 | 142 | 9.4 |
| 100 | 140 | 13.4 |
For detailed engineering specifications, see the full engineering data page. For sizing guidance with non-water fluids, read our pump sizing guide.