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Description
⚠ Discontinued Product
This model has been discontinued by Grundfos. Stock may be limited. Contact PumpStop to confirm availability or discuss a replacement model.
Grundfos — World's Largest Pump Manufacturer · Bjerringbro, Denmark
98931131 · End-Suction Close-Coupled Pump
The Grundfos 98931131 (NB 100-400/346 BAF2SESBAQETX4) is a End-Suction Close-Coupled Pump. End-suction close-coupled pumps compliant with EN733 for HVAC and water supply. Nominal performance: 920US gpm at 176.9ft. Rated 440-480DV, 3.0-Phase, 60 Hz.
Power
60HP
Voltage
440-480DV
Phase
3.0-Phase
Max Flow
920US gpm
Max Head
176.9ft
Max Pressure
232.06psi
Grundfos
World's largest pump manufacturer — engineering and manufacturing in 17 countries since 1945
Industrial Grade
IE3 / NEMA Premium motor — reduces operating cost over service life
Authorized Distributor
Genuine Grundfos product — full manufacturer warranty coverage
Expert Support
Technical help available — call (781) 281-8905 or chat
Why This Product
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.
Contact for Availability
Parts availability varies. Contact PumpStop to confirm stock, lead time, and pricing before placing an order.
Model Information — 98931131
Series: NB
Impeller Material: Stainless steel
Housing Material: Cast iron
Shaft Seal: BAQE
Flange Rating: PN 16
Technical Specifications
| Model Number | 98931131 |
| Product Series | NB |
| Series Description | End-Suction Close-Coupled Pump |
| Power | 60HP |
| Voltage | 440-480DV |
| Phase | 3.0-Phase |
| Frequency | 60 Hz |
| Motor Speed | 1782rpm |
| Full Load Current | 70A |
| Motor Type | INNOMOTICS |
| Motor Protection | PTC |
| Motor Efficiency Class | IE3 / NEMA Premium |
| Motor Efficiency | IE3 95% |
| Insulation Class | F |
| Protection Class (IP) | IP55 |
| Nominal Flow | 920US gpm |
| Nominal Head | 176.9ft |
| Max Operating Pressure | 232.06psi |
| Max Fluid Temperature | 248°F |
| Max Ambient Temperature | 104°F |
| Inlet Connection | DN 125 |
| Outlet Connection | DN 100 |
| Pipe Pressure Rating | PN 16 |
| Pipe Standard | EN 1092-2 |
| Impeller Material | Stainless steel |
| Housing Material | Cast iron |
| Shaft Seal | BAQE |
| Impeller Nominal Diameter | 15.7in |
Important Notices
| Electrical | Verify supply voltage, phase, and frequency match nameplate before installation: 440-480DV, 3.0-Phase, 60 Hz. |
| Temperature limits | Do not exceed max fluid temperature 248°F or max ambient temperature 104°F. Exceeding limits damages seals and motor insulation. |
| Dry running | Do not run dry. NB 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. |
Documentation
✓ Installation and Operating Manual (IOM) — NB Series
✓ Product Data Sheet — 98931131
✓ Service Manual and Spare Parts List
Need the IOM, data sheet, or spare parts list? Contact PumpStop and we'll send it over.
Before You OrderConfirm model code, voltage, phase, and frequency match your installation. For sizing help, spare parts, or documentation, call (781) 281-8905 or chat with PumpStop.
- EAN
- 5712603774732
- Actual impeller diameter
- 13.6 in
- Bearing insulation type N-end
- CERAMIC SHAFT COATING
- Bearing lubrication
- Grease
- Built-in motor protection
- PTC
- Code for rubber
- E
- Code for shaft seal
- BAQE
- Connect code
- F2
- Connection
- PN 16
- Curve tolerance
- ISO9906:2012 3B
- Density
- 62.29 lb/ft³
- Diameter
- 1.65 in
- DOE Pump Energy Index CL
- 0.98
- Enclosure class (IEC 34-5)
- IP55
- Frequency converter
- NONE
- Gross weight
- 1210.0 lb
- Housing
- Cast iron
- IE efficiency
- IE3 95%
- IE Efficiency class
- IE3 / NEMA Premium
- Impeller
- Stainless steel
- Insulation class (IEC 85)
- F
- Internal pump house coating
- CED
- Liquid temperature range
- 32 .. 248 °F
- Mains frequency
- 60 Hz
- Material code
- S
- Material Pricing Group
- 5D
- Maximum operating pressure
- 16 bar
- Minimum efficiency index, MEI ≥
- 0.7
- Motor efficiency at 1/2 load
- 95.1-95.1 %
- Motor efficiency at 3/4 load
- 95.3-95.3 %
- Motor efficiency at full load 1
- 95-95 %
- Motor type
- SIEMENS
- Mount. design. acc. IEC 34-7
- IM B35
- Net weight
- 1150.0 lb
- Number of poles
- 4
- Pipe connection standard
- EN 1092-2
- Power factor 1
- 0.85
- Pressure rating for connection
- PN 16
- Pressure sensor
- N
- Pump housing
- Cast iron
- Pump speed on which pump data are based
- 1782 rpm
- Pump version
- A
- Pumped liquid
- Water
- Range of ambient temperature
- -4 .. 104 °F
- Rated current
- 70 A
- Rated flow
- 920 US gpm
- Rated head
- 176.9 ft
- Rated power - P2
- 45 kW
- Rated speed
- 1782 rpm
- Rated voltage
- 3 x 440-480D V
- Real Time
- Delivery date to be confirmed on Sales Order Update with real time availability and Net price
- Rubber
- E
- Selected liquid temperature
- 68 °F
- Shaft
- Stainless steel
- Shaft diameter
- 1.65 in
- Size of inlet connection
- DN 125
- Size of outlet connection
- DN 100
- Standard
- EN 1092-2
- Starting current
- 770-770 %
- Support block (Yes/No)
- N
- Type
- SIEMENS
- Version
- A
Dimensional Drawing
Wiring Diagram
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