Normalized Centrifugal PumpFBCN 200-400
Large-capacity model for critical industrial installations: refineries, steel mills, chemical plants, municipal water supply and mining. Back pull-out construction per ASME B73.1.
Performance Envelope — 1750 rpm
Maximum flow
900 m³/h
Head
30–84 m w.c.
Absorbed power
75–285 HP
NPSH required
3–9 m
Maximum efficiency
83%
Envelope read from the official 1750 rpm curve PDF (chart-reading precision, ~±half a grid division). For design, confirm the values with the FB Bombas engineering data sheet.
Performance Curves
Q × H hydraulic envelope of the FBCN 200-400 pump at 1750 rpm, per the official FB Bombas technical catalog (curve CC-0205.09), with ISO 9906 hydraulic guarantees. Reference plot for pre-sizing — confirm the operating point with FB Bombas engineering.
- Flow range
- 0.0 – 900.0 m³/h
- Head range
- 30.0 – 84.0 m
- Impellers
- 6 × Ø 404–320 mm
- Speed
- 1750 rpm · CC-0205.09
Hydraulic envelope — all impellers
Overlaid H × Q curves. Each color represents one impeller diameter.
- Ø 404 mm
- Ø 400 mm
- Ø 380 mm
- Ø 360 mm
- Ø 340 mm
- Ø 320 mm
Impeller Ø 404 mm
| Flow · m³/h | 0.0 | 250.0 | 500.0 | 750.0 | 900.0 |
|---|---|---|---|---|---|
| Head H · m | 84.0 | 82.0 | 77.0 | 70.0 | 62.0 |
Impeller Ø 400 mm
| Flow · m³/h | 0.0 | 250.0 | 500.0 | 750.0 | 890.0 |
|---|---|---|---|---|---|
| Head H · m | 83.0 | 81.0 | 76.0 | 68.0 | 58.0 |
Impeller Ø 380 mm
| Flow · m³/h | 0.0 | 250.0 | 500.0 | 700.0 | 850.0 |
|---|---|---|---|---|---|
| Head H · m | 74.0 | 72.0 | 67.0 | 60.0 | 53.0 |
Impeller Ø 360 mm
| Flow · m³/h | 0.0 | 250.0 | 500.0 | 700.0 | 800.0 |
|---|---|---|---|---|---|
| Head H · m | 64.0 | 62.0 | 57.0 | 50.0 | 44.0 |
Impeller Ø 340 mm
| Flow · m³/h | 0.0 | 250.0 | 450.0 | 650.0 | 750.0 |
|---|---|---|---|---|---|
| Head H · m | 57.0 | 55.0 | 50.0 | 43.0 | 37.0 |
Impeller Ø 320 mm
| Flow · m³/h | 0.0 | 250.0 | 450.0 | 600.0 | 720.0 |
|---|---|---|---|---|---|
| Head H · m | 50.0 | 48.0 | 43.0 | 37.0 | 30.0 |
Available impeller diameters
Each pump ships with the impeller diameter calculated by FB engineering for the specific operating point — design flow and head.
| # | Impeller diameter | Impeller useful width |
|---|---|---|
| 1 | 404 mm | 40 mm |
| 2 | 400 mm | 40 mm |
| 3 | 380 mm | 40 mm |
| 4 | 360 mm | 40 mm |
| 5 | 340 mm | 40 mm |
| 6 | 320 mm | 40 mm |
Typical applications
- Cooling systems for chemical plants and refineries
- Industrial water lines in steel mills and mining
- Treated water pumping in water utilities
- Large NFPA-20 fire-fighting systems
- Lubricating oil cooling for turbomachinery
Frequently Asked Questions
Technical questions about the FBCN 200-400 centrifugal pump.
Physical dimensions and detailed curve
FBCN large-capacity models do not have individual physical dimensions published in the standard technical manual. Each project receives dimensional drawing, project-specific performance curve and material selection through direct consultation with FB Bombas engineering.
- Dimensional drawing with base, flanges, shaft and shaft end per ASME B73.1
- Printed performance curve at the project operating point
- Material selection (cast iron / steel / 316 stainless / duplex) by fluid
- API 682 mechanical seal plan (1, 2, 11, 21, 31, 32, 53A, 53B, 53C)