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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
CRT 8-4 · Grundfos Accessory / Spare Part / Control
The Grundfos 91129759 (CRT 8-4) is a Grundfos Accessory / Spare Part / Control. Genuine Grundfos accessory, control component, spare part, or sensor. Nominal performance: 52.8US gpm at 153.2ft. Rated 115/208-230V, 1.0-Phase, 60 Hz. Applications include HVAC: Heating, HVAC: Air Conditioning, Plumbing: Pressure Boosting and more.
Power
3HP
Voltage
115/208-230V
Phase
1.0-Phase
Max Flow
52.8US gpm
Max Head
153.2ft
Grundfos
World's largest pump manufacturer — engineering and manufacturing in 17 countries since 1945
Industrial Grade
Built and tested to IEC and NEMA standards
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 — CRT 8-4
Series: ACC
Model Code: CRT 8-4
Impeller Material: Titanium
Housing Material: Titanium
Shaft Seal: AUUE
Technical Specifications
| Model Number | 91129759 |
| Product Series | ACC |
| Series Description | Grundfos Accessory / Spare Part / Control |
| Power | 3HP |
| Voltage | 115/208-230V |
| Phase | 1.0-Phase |
| Frequency | 60 Hz |
| Motor Speed | 3450rpm |
| Pump Speed | 3465rpm |
| Motor Type | BALDOR |
| Motor Efficiency | 75% |
| Protection Class (IP) | TEFC |
| Nominal Flow | 52.8US gpm |
| Nominal Head | 153.2ft |
| Max Fluid Temperature | 248°F |
| Max Ambient Temperature | 104°F |
| Nominal Pipe Bore | PJE 2 |
| Impeller Material | Titanium |
| Housing Material | Titanium |
| Shaft Seal | AUUE |
Applications
HVAC: Heating
HVAC: Air Conditioning
Plumbing: Pressure Boosting
District heating
District cooling
Machining
Wash and clean
Process liquids transfer
Industrial heating
Cooling
Industrial water supply & transfer
Industrial wastewater treatment & reuse
Industrial process water treatment
Desalination
Municipal surface water
Drinking water treatment
Municipal water transportation
Municipal solar solutions
Rotor & spray irrigation
Ground water transfer
Livestock & Wildlife Watering
Water Treatment Fertigation
Chemigation & Dosing
Pivot & Lateral Irrigation
Frost protection
Solar boosting and water supply solutions
Controls and digital groundwater management
Solar controls and digital water management
Municipal solar solutions
Agriculture solar solutions
Livestock watering with solar solutions
Community solar solutions
Important Notices
| Electrical | Verify supply voltage, phase, and frequency match nameplate before installation: 115/208-230V, 1.0-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. ACC 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) — ACC Series
✓ Product Data Sheet — CRT 8-4
✓ 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
- 5700398950998
- Applications
- Industrial applications
- Approvals and markings
- 62.8 m
- Battery back-up
- 62.8 m
- Built-in motor protection
- NONE
- Code for rubber
- E
- Colour
- 62.8 m
- Connect code
- P
- Connection
- PJE 2
- Cooling
- TEFC
- Curve tolerance
- ISO9906:2012 3B
- Density
- 62.29 lb/ft³
- Enclosure class (IEC 34-5)
- IP55
- Flange size for motor
- 182TC
- Flow range
- 62.8 m
- Gross weight
- 122.0 lb
- Head max
- 62.8 m
- Housing
- Titanium
- Impeller
- Titanium
- Impellers
- 4
- Length
- 62.8 m
- Liquid temperature range
- -4 .. 248 °F
- Mains frequency
- 60 Hz
- Material code
- A
- Material Pricing Group
- 6
- Max pressure at stated temp
- 363 psi / 250 °F
- Maximum ambient temperature
- 104 °F
- Model
- A
- Motor
- 182TC
- Motor efficiency at full load 1
- 0.75
- Motor type
- BALDOR
- Net weight
- 110.0 lb
- Number of leads
- 62.8 m
- Number of poles
- 2
- Pipe connection
- PJE 2
- Pipework connection
- 62.8 m
- Pressure retention valve
- 62.8 m
- Primary shaft seal
- AUUE
- Product family
- CRT 8
- Pump housing
- Titanium
- Pump No
- 96124866
- Pump speed on which pump data are based
- 3465 rpm
- Pump version
- A
- Pumped liquid
- Water
- Rated flow
- 52.8 US gpm
- Rated head
- 153.2 ft
- Rated power - P2
- 2.2 kW
- Rated speed
- 3450 rpm
- Rated voltage
- 1 x 115/208-230 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
- Sens.interface
- 62.8 m
- Service factor
- 1.15
- Stages
- 4
- Type
- BALDOR
- Valve type
- 62.8 m
- Version
- A
Dimensional Drawing
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