Description
The Grundfos 15C91903 is a Submersible Booster Module. Submersible multistage booster pump for industrial filtration and water supply. Nominal performance: 203US gpm at 82.02ft. Rated 380-400-415V, 3-Phase, 50 Hz. Applications include Industrial water supply & transfer, Desalination, Municipal wells and more.
Genuine Grundfos Part
OEM component engineered and manufactured to Grundfos specifications. Maintains pump performance and warranty coverage.
Full Traceability
Genuine Grundfos parts carry manufacturer traceability from production through delivery. No counterfeit risk.
Authorized Source
PumpStop is an authorized Grundfos distributor. All parts are genuine — not aftermarket, not surplus.
Confirm Compatibility
Always verify part number against your pump model number and serial number before ordering. Contact PumpStop for parts identification assistance.
Technical Support Available
PumpStop technical team can identify correct parts from pump nameplate data, serial number, or model code. Call (781) 281-8905 or chat.
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| Model Number | 15C91903 |
| Product Series | BM |
| Series Description | Submersible Booster Module |
| Power | 7.5HP |
| Voltage | 380-400-415V |
| Phase | 3-Phase |
| Frequency | 50 Hz |
| Full Load Current | 13-13-13.4A |
| Protection Class (IP) | IP66 |
| Nominal Flow | 203US gpm |
| Nominal Head | 82.02ft |
| Max Operating Pressure | 1199.46psi |
| Max Fluid Temperature | 104°F |
| Nominal Pipe Bore | 89 mm |
| Pipe Standard | PJE |
| Impeller Material | Stainless steel |
| Electrical | Verify supply voltage, phase, and frequency match nameplate before installation: 380-400-415V, 3-Phase, 50 Hz. |
| Temperature limits | Do not exceed max fluid temperature 104°F. Exceeding limits damages seals and motor insulation. |
| Dry running | Do not run dry. BM pumps use the pumped fluid to lubricate the shaft seal. Dry running destroys the seal within seconds. Install dry-run protection on all automatic installations. |
| Maintenance | Refer to the Grundfos Installation and Operating Manual (IOM) for correct installation, commissioning, and maintenance. Contact PumpStop for documentation. |
- EAN
- 5700392891143
- Applications
- Pressure boosting, Groundwater supply, Industrial applications
- Built-in temp. transmitter
- yes
- Code for rubber
- E/FKM
- Connection
- straight
- Curve tolerance
- ISO9906:2012 3B
- Density
- 62.29 lb/ft³
- Enclosure class (IEC 34-5)
- IP66
- Gross weight
- 197.0 lb
- Impeller
- Stainless steel
- Mains frequency
- 50 Hz
- Material Pricing Group
- 37
- Maximum liquid temperature
- 104 °F
- Maximum operating pressure
- 82.7 bar
- Maximum outlet pressure
- 82 bar
- Maximum permissible inlet pressure
- 50 bar
- Minimum efficiency index, MEI ≥
- 0.4
- Model
- E
- Motor
- Stainless steel
- Net weight
- 139.0 lb
- Pipe connection
- straight
- Pipe connection standard
- PJE
- Power factor 1
- 0.85-0.81-0.76
- Product family
- BM 6"
- Pump
- Stainless steel
- Pumped liquid
- Water
- Rated current
- 13.0-13.0-13.4 A
- Rated flow
- 203 US gpm
- Rated head
- 82.02 ft
- Rated power - P2
- 5.5 kW
- Rated voltage
- 3 x 380-400-415 V
- Real Time
- Delivery date to be confirmed on Sales Order Update with real time availability and Net price
- Rubber
- E/FKM
- Selected liquid temperature
- 68 °F
- Stages
- 3
- Standard
- PJE
- Start. method
- direct-on-line
- Starting current
- 480-530-550 %
- Thermal protec
- external
Dimensional Drawing