The Grundfos CR 3 Vertical Multistage Centrifugal Pump (CR 3) is part of the Grundfos CR range, engineered in Cast iron / 304 stainless. Delivers up to 18 GPM at heads up to 680 ft, with motor sizes from 0.5-3 HP. Drive: Fixed-speed NEMA TEFC motor, 60 Hz. Used in Industrial pressure boosting and similar applications.
Specifications
| Max flow | 18 GPM (60 Hz) |
| Max head | 680 ft |
| Max working pressure | 290 psi |
| Motor range | 0.5-3 HP |
| Stages | up to 36 |
| Frequency | 60 Hz |
| Voltage | 115/230 V single-phase or 208-230/440-480 V three-phase (model dependent) |
| Liquid temperature | 5 - 250 °F (-20 - 250 °F with HQQV seal) |
| Construction | Cast iron / 304 stainless |
| Motor | Fixed-speed NEMA TEFC motor, 60 Hz |
| Brand | Grundfos |
| Model | CR 3 |
| Country of Origin | Denmark / USA (varies by model) |
Materials of Construction
Cast iron pump head, base & motor stool; AISI 304 stainless steel chambers, impellers and shaft; ceramic/carbon shaft seal (HQQE/HQQV)
Typical Applications
- Industrial pressure boosting
- boiler feed
- cooling-tower makeup
- condensate transfer
- washdown
- reverse osmosis pre-feed
- fire protection
- light-industry process water
Datasheets & Manuals
Industries & Applications
The Grundfos CR 3 is widely deployed across these industries and use cases:
- Boiler feed water in industrial steam systems
- Reverse osmosis high-pressure feed in pretreatment
- Cooling tower makeup water
- Cooling tower bleed transfer
- High-rise commercial pressure boosting
- Fire protection jockey pump
- Irrigation in agriculture and golf courses
- Cip (clean-in-place) circulation
- Condensate transfer in district heating
- Water transfer in food and beverage plants
Related & Compare
Stage Configurations - Choose Your Model
The Grundfos CR 3 series is available in multiple stage counts. More stages = higher pressure (head) at roughly the same flow rate (~18 GPM at the best efficiency point). Pick the configuration that matches your required discharge pressure:
| Model | Stages | Head @ BEP | Motor HP | Phase | Material Number |
|---|---|---|---|---|---|
| CR 3-2 | 2 | ~110 ft (47 psi) | 1/3 HP | 3-phase | 99916311 |
| CR 3-3 | 3 | ~165 ft (71 psi) | 1/2 HP | 3-phase | 99916312 |
| CR 3-4 | 4 | ~220 ft (95 psi) | 3/4 HP | 3-phase | 99916313 |
| CR 3-5 | 5 | ~275 ft (119 psi) | 3/4 HP | 3-phase | 99916314 |
| CR 3-6 | 6 | ~330 ft (142 psi) | 1 HP | 3-phase | 99916315 |
| CR 3-10 | 10 | ~550 ft (238 psi) | 2 HP | 3-phase | 99916319 |
| CR 3-11 | 11 | ~605 ft (261 psi) | 2 HP | 3-phase | 99916320 |
| CR 3-12 | 12 | ~660 ft (285 psi) | 2 HP | 3-phase | 99916321 |
Click any model to see full specifications, all available phase/voltage/seal variants, and request a quote. If you don't see your exact configuration, contact us — we can quote any of the 14,000+ Grundfos material numbers, not just those listed here.
Frequently Asked Questions
- What is the maximum flow rate of the Grundfos CR 3?
- The CR 3 delivers up to 18 GPM at 60 Hz.
- What is the maximum head/pressure of the CR 3?
- Maximum head is 680 ft (about 290 psi). Actual operating point depends on stage count and motor size.
- What materials of construction are available for the CR 3?
- Cast iron pump head, base & motor stool; AISI 304 stainless steel chambers, impellers and shaft; ceramic/carbon shaft seal (HQQE/HQQV)
- What applications is the Grundfos CR 3 suitable for?
- Industrial pressure boosting, boiler feed, cooling-tower makeup, condensate transfer, washdown, reverse osmosis pre-feed, fire protection, light-industry process water
- Can this pump be supplied with a variable frequency drive (VFD)?
- Yes - either order the matching E-Pump variant with integrated MLE motor (CRE / CRIE / CRNE / CME), or pair the fixed-speed pump with a Grundfos CUE external VFD.
- What shaft seal options are available?
- Standard HQQE (carbon/SiC with EPDM) for cold/warm water and HQQV (carbon/SiC with FKM) for hot water and aggressive media. Cartridge double seals available for hazardous duty.
- Is dry-run protection available?
- Yes - the Grundfos LiqTec sensor mounts inside the pump head and shuts down the pump if it detects dry running. Standard on most CRE configurations.
- Is the Grundfos CR 3 available with stock or quick-ship lead times?
- Many configurations ship from stock through Grundfos USA. Contact ForeverPure Place for current lead time on your specific configuration.
- How do I get a quote for the Grundfos CR 3?
- Use the Request Quote button on this page, call our sales team, or email sales@foreverpureplace.com with model, voltage, materials, seal type and quantity.
