Grundfos CR Vertical Multistage In-Line Pumps
The Grundfos CR series represents the world’s first and most advanced vertical multistage in-line pump technology. Engineered for superior reliability, exceptional efficiency, and unmatched versatility, CR pumps deliver consistent performance across demanding industrial, commercial, and water treatment applications.
As an authorized Grundfos Water Pump Dealer in Dubai, we supply the complete CR, CRI, CRN, and CRT range with genuine manufacturer warranty and technical support throughout the UAE.
Technical Specifications
| Parameter | Specification |
|---|---|
| Flow Range | 0.3 m³/h – 180 m³/h |
| Head Range | Up to 400 metres |
| Temperature Range (Standard) | -20°C to +120°C (CR) / -30°C to +120°C (CRI/CRN) |
| Temperature Range (On Request) | -40°C to +180°C |
| Maximum System Pressure | Up to 45 bar |
| Pump Sizes | 11 flow sizes |
| Configuration Options | Near 1 million combinations |
| Motor Efficiency | EFF1 rated (3-phase motors) |
| Certification | ISO 9001, ATEX approved variants available |
CR Pump Model Range
| Model | Flow Range (m³/h) | Max Efficiency | Material Construction |
|---|---|---|---|
| CR 1s | 0.3 – 1.1 | 35% | AISI 304 / Cast Iron |
| CR 1 | 0.7 – 2.4 | 48% | AISI 304 / Cast Iron |
| CR 3 | 1.2 – 4.5 | 58% | AISI 304 / Cast Iron |
| CR 5 | 2.5 – 8.5 | 66% | AISI 304 / Cast Iron |
| CR 10 | 5 – 13 | 70% | AISI 304 / Cast Iron |
| CR 15 | 9 – 24 | 72% | AISI 304 / Cast Iron |
| CR 20 | 11 – 29 | 73% | AISI 304 / Cast Iron |
| CR 32 | 15 – 40 | 78% | AISI 304 / Cast Iron |
| CR 45 | 22 – 58 | 79% | AISI 304 / Cast Iron |
| CR 64 | 30 – 85 | 80% | AISI 304 / Cast Iron |
| CR 90 | 45 – 120 | 81% | AISI 304 / Cast Iron |
| CR 120 | 60 – 160 | 75% | AISI 304 / Cast Iron |
| CR 150 | 75 – 180 | 72% | AISI 304 / Cast Iron |
Material Variants
The CR series is available in four material constructions to address diverse liquid handling requirements:
CR – Standard Construction AISI 304 stainless steel hydraulics with cast iron top and base. Suitable for clean water, general industrial applications, and moderate-duty service.
CRI – All Stainless Steel Complete AISI 304 stainless steel construction throughout. Ideal for applications requiring full corrosion resistance without cast iron components.
CRN – High-Grade Stainless Steel AISI 316 stainless steel throughout for superior corrosion protection. Recommended for aggressive liquids, chemical processing, and marine environments.
CRT – Full Titanium Complete titanium construction offering unmatched corrosion resistance. The only pump of its kind available in full titanium—withstands even prolonged seawater immersion without surface degradation. Available in CR 2, 4, 8, and 16 sizes.
Key Features & Benefits
Grundfos MG/MGE Motors Grundfos manufactures its own motors to ensure optimal pump-motor integration. MG motors deliver remarkably quiet operation with high efficiency. The self-regulating MGE configuration features an integrated frequency converter for variable speed control.
Unique Cartridge Seal Design The innovative cartridge shaft seal increases reliability through hardwearing materials that prevent downtime. The balanced seal design reduces pressure sensitivity while eliminating axial movement that causes shaft and rubber part wear. Seal replacement takes minutes without special tools or pump disassembly.
LiqTec Dry-Running Protection The patented Grundfos LiqTec system provides 24-hour liquid monitoring. If the pump runs dry, LiqTec immediately stops operation before damage occurs—eliminating the most common cause of pump failure.
High-Performance Hydraulics State-of-the-art hydraulic design combined with precision laser-welded impellers delivers 10% greater efficiency than previous generations. This translates to 15-20% power reduction and enables smaller motor selection for equivalent duty points.
Durable Bearings CR bearings achieve exceptional service life through hardwearing materials engineered for difficult liquids. Multiple bearing material options address specific application challenges.
Spacer Coupling Design Motors weighing more than 35 kg can remain in place during seal replacement, significantly reducing maintenance time and eliminating heavy lifting requirements.
Energy Efficiency & Cost Savings
Electricity accounts for approximately 85% of total pump lifecycle costs—far exceeding purchase price and maintenance combined. The Grundfos CR addresses this through:
EFF1 Motor Classification All 3-phase 50Hz CR motors carry the EFF1 efficiency mark, representing the highest efficiency rating available for pump motors.
Annual Energy Savings by Application:
| Application | Typical Duty Point | Operating Hours/Day | Total kWh Reduction/Year |
|---|---|---|---|
| Water Supply | 80 m³/h at 6 bar | 24 hours | 23,700 kWh |
| Water Treatment | 2 m³/h at 15 bar | 15 hours | 3,800 kWh |
| General Industry | 6 m³/h at 10 bar | 10 hours | 2,600 kWh |
Additional EFF1 Benefits:
- Quieter operation due to smaller cooling fans
- Higher ambient temperature tolerance up to 60°C
- Reduced heat generation extending component life
Efficiency Innovations
Three engineering improvements combine to deliver 10% pump efficiency gains:
1. Floating Seal Ring Technology Minimizes internal leakage caused by pressure differentials. Testing confirms that just 0.1mm impeller seal clearance causes 5% efficiency loss. The floating seal ring between chambers creates near-perfect sealing.
2. Advanced Impeller Design Laser-welded impellers ensure streamlined flow patterns that reduce eddy currents and friction losses. Grundfos-developed laser welding technology enables impeller geometries approaching theoretical perfection.
3. Precision Manufacturing Proprietary production processes deliver near-perfect component geometries and tolerances, maximizing the hydraulic efficiency achieved through research and development.
Connection Options
CR Oval Flange (BSP): Rp 1 to Rp 2½ (standard) | Extended options available
CR/CRI/CRN Flange: DN 25 to DN 150 (DIN, JIS, ANSI standards)
PJE Coupling (Victaulic): Rp 1¼ to Rp 5 / DN 32 to DN 50
Clamp Coupling: Ø48.3 to Ø60.3
Union Connection (+GF+): Rp 2 to Rp 2¾
TriClamp: Pharmaceutical and food industry sanitary connections
Shaft Seal Solutions
The cartridge shaft seal system accommodates diverse application requirements:
- Flushed Seal (Quench) – For crystallizing or hardening liquids
- Double Seal / Tandem – For toxic or explosive liquids
- Double Back-to-Back – Leakage-proof design for critical applications
- Magnetic Drive (MAGdrive) – Zero-leakage solution for hazardous liquids
- Air-Cooled Configuration – For liquids up to +180°C
- Low Temperature Design – For liquids down to -40°C
Seal Face Materials: Multiple options including titanium for extreme corrosion resistance
Application Capabilities
The CR range handles virtually any pumping challenge:
| Liquid Type | Examples |
|---|---|
| Aggressive/Corrosive | Seawater, hypochlorites, hydrochloric acid, ferric chloride, nitric acid, chromic acid |
| Abrasive | Metasilicate, abrasive cleaners/degreasers, phosphates |
| Toxic/Explosive | Trichloroethylene, toluene, petrol, ethyl alcohol, methyl alcohol |
| High Viscosity | Glycols, lubricating oils, vegetable oils |
| Hardening | Paints |
| Crystallizing | Glycol additives, naphthalene, sugar products (dextran), salts |
Primary Applications:
- Boiler feed systems
- Fire fighting installations
- Industrial washing and cleaning
- Water treatment plants
- Industrial cooling systems
- Pressure boosting
- Reverse osmosis systems
- Chemical and petrochemical processing
- Pharmaceutical manufacturing
- Food and beverage production
CRE Variable Speed Pumps
For applications with varying flow and pressure demands, the CRE series combines CR hydraulics with Grundfos-developed variable speed motors:
Intelligent Process Control:
- Constant pressure regulation
- Constant differential pressure
- Temperature control
- pH level management
- Timed operation sequences
Communication Integration: Remote control capability and BMS/SCADA system connectivity for complete process monitoring and control.
Ultimate Efficiency: Variable speed operation matches pump output precisely to demand, eliminating wasted energy from overcapacity. The electronically controlled motors further enhance the already efficient CR hydraulics.
Motor Options
Configuration Variants:
- Single-phase motors
- Four-pole motors
- CEMEP EFF1 high-efficiency motors
- ATEX approved explosion-proof motors
- Anti-condensation motor heaters
- Alternative voltage specifications
- CSA/UL approved variants
Special Features:
- PTC sensor or thermal switch protection
- Harting plug industrial connections
- Alternative IP enclosure classes
- Alternative terminal box positions
- Pulley head for non-electric drivers (diesel)
Customization Options
Pump Options:
- Horizontal mounting for height-restricted installations
- Low NPSH configurations for poor inlet conditions
- High-pressure variants up to 45 bar
- Surface treatments (electropolished, cleaned, silicone-free)
- Various pump and material certificates
Additional Features:
- LiqTec dry-running sensor
- Bearing flange for high inlet pressures
- Custom paint finishes
- Oversized or undersized motor configurations
Quality Assurance
Every Grundfos CR pump undergoes comprehensive factory testing before shipment:
- Performance verification
- Power consumption measurement
- Static pressure testing
Production is certified to ISO 9001 standards with rigorous process control ensuring consistent quality across all units.
Genuine Grundfos Spare Parts
Maintain optimal CR pump performance with original components including cartridge seals, bearings, impellers, O-rings, and motor assemblies. We stock replacement parts for all CR series models.
Select Grundfos Pumps
Browse our complete inventory of Grundfos CR, CRI, CRN, and CRT vertical multistage pumps. As Grundfos Pump Suppliers in Dubai, we provide competitive pricing, technical consultation, and prompt delivery across Dubai, Sharjah, Abu Dhabi, Ajman, and all UAE locations.