Grundfos SB & SBA Submersible Pressure Booster Pumps
The Grundfos SB and SBA pumps are reliable submersible pressure pumps designed for domestic applications such as private wells and rainwater tanks. Robust, noiseless, and easy to install, these submersible multistage boosters reliably deliver up to 3 m³/h flow for pumping clean water. The SB operates with an external control unit like Grundfos PM1 or PM2, while the SBA is an all-in-one solution with an integrated controller—just plug in and start pumping.
As an authorized Grundfos Water Pump Dealer in Dubai, we supply the complete SB and SBA range with genuine warranty and technical support across the UAE.
Technical Specifications
| Parameter | SB(A) 3-35 | SB(A) 3-45 |
|---|---|---|
| Maximum Flow | 3 m³/h | 3 m³/h |
| Delivery Pressure | 2.4 bar | 2.8 bar |
| Minimum Efficiency Index (MEI) | ≥0.70 | ≥0.70 |
| Strainer Mesh Size | 1 mm | 1 mm |
| Construction Materials | Composite & Stainless Steel | Composite & Stainless Steel |
Model Variants Overview
Grundfos SB Range (External Control)
| Variant | Strainer Type | Float Switch | Control Method |
|---|---|---|---|
| SB A | Fixed strainer | With float switch | External (PM1/PM2) |
| SB AW | Floating suction | With float switch | External (PM1/PM2) |
| SB MW | Floating suction | Without float switch | External (PM1/PM2) |
Grundfos SBA Range (Integrated Control)
| Variant | Strainer Type | Float Switch | Control Method |
|---|---|---|---|
| SBA A | Fixed strainer | With float switch | Built-in controller |
| SBA M | Fixed strainer | With float switch | Built-in controller |
| SBA AW | Floating suction | With float switch | Built-in controller |
| SBA MW | Floating suction | Without float switch | Built-in controller |
Quick Sizing Guide
SB(A) 3-45 at 3 m³/h, 2.8 bar
| Vertical Max. Hgeo (m) | Horizontal Max. L (m) 1″ pipe | 3/4″ / 1/2″ pipe (m) | Total Horizontal Length 1″ + 3/4″ / 1″ + 1/2″ (m) |
|---|---|---|---|
| 15 | 15 | 20 / 4 | 25 / 19 |
| 15 | 10 | 22 / 5 | 32 / 15 |
| 10 | 15 | 33 / 8 | 48 / 23 |
| 10 | 10 | 35 / 8.5 | 45 / 18.5 |
| 5 | 15 | 46 / 11 | 61 / 26 |
| 5 | 10 | 48 / 11.5 | 58 / 22.5 |
SB(A) 3-35 at 3 m³/h, 2.4 bar
| Vertical Max. Hgeo (m) | Horizontal Max. L (m) 1″ pipe | 3/4″ / 1/2″ pipe (m) | Total Horizontal Length 1″ + 3/4″ / 1″ + 1/2″ (m) |
|---|---|---|---|
| 15 | 15 | 9 / 2 | 16 / 17 |
| 15 | 10 | 11 / 3 | 21 / 13 |
| 10 | 15 | 23 / 5.5 | 38 / 20.5 |
| 10 | 10 | 25 / 6 | 35 / 16 |
| 5 | 15 | 36 / 8.5 | 51 / 23.5 |
| 5 | 10 | 38 / 9 | 48 / 19 |
Pipe Inner Diameters:
- 1″ pipe: Inner-ø 25mm
- 3/4″ pipe: Inner-ø 20mm
- 1/2″ pipe: Inner-ø 15mm
Sizing Preconditions
| Factor | Specification |
|---|---|
| Tap Pressure | 3 bar (add 2 floors for 4 bar) |
| Suction Type | Flooded suction |
| Flow per Tap | 0.5 l/s average |
| Indoor Piping | 1/2″ or 3/4″ |
| Cistern to House | 1″ pipe recommended |
| Fittings Considered | NRV, gate valve, pipe extensions, 90° bends |
Built for Reliability
Noiseless Operation
No noise emitted when submerged—a noiseless alternative to dry-installed pumps. Ideal for residential installations where quiet operation is essential.
Robust and Reliable
Robust design and corrosion-resistant build of composite and stainless steel materials ensures long service life in demanding water conditions.
Energy Efficient
Meets the Minimum Efficiency Index benchmark of MEI ≥0.70 for most efficient water pumps, reducing electricity consumption and operating costs.
Integrated Protection
Automatically stops operating in cases of overheating or dry-running, restarting when safe. This protection extends pump life and prevents damage.
No Clogging
Stainless steel strainers with 1mm mesh prevent large particles from entering the pump housing, ensuring reliable operation with minimal maintenance.
Floating Inlet Strainer
Optional floating suction strainer draws clean, particle-free water from just below the water surface, avoiding sediment at the tank bottom.
Non-Return Valve
Supplied with non-return valve to avoid emptying the pipe during pump stop, ensuring instant water delivery on restart.
SBA: A Model of Simplicity
The SBA represents the ultimate in installation simplicity—just plug in and start pumping. As an easy-to-install, all-in-one pump with integrated control unit, the SBA eliminates the need for separate controllers, pressure switches, or external accessories.
| Feature | SB (External Control) | SBA (Integrated Control) |
|---|---|---|
| Control Unit | External (PM1/PM2 required) | Built-in |
| Installation Complexity | Moderate | Simple |
| Start/Stop Control | Via external unit | Automatic |
| Protection Features | Depends on controller | Fully integrated |
| Plug-and-Play | No | Yes |
Ideal for Rainwater Harvesting
In addition to private wells, SB and SBA pumps are ideally suited for submerging in rainwater tanks, where roof run-off is collected and filtered.
Rainwater Harvesting Benefits
| Benefit | Description |
|---|---|
| Water Conservation | Saves drinking water for drinking purposes |
| Flood Risk Reduction | Less pressure on sewer at peak loads |
| Appliance Protection | Soft water prolongs life of appliances |
| Cost Savings | Reduced water bills |
Suitable Rainwater Applications
- Garden watering and irrigation
- Toilet flushing systems
- Washing machine supply
- Car washing
- General outdoor cleaning
Suction Kit Blue Accessories
| Specification | Detail |
|---|---|
| Hose Length | 1000 mm |
| Ball Diameter | 150 mm |
| Foot Valves Material | Polypropylene |
| Connection | 1″ |
| Hose Material | PVC |
Available Product Codes
| Product Code | Description |
|---|---|
| 98394164 | 1M. D25 THR. 1″ GAS BOX |
| 98394165 | 1M. D25 THR. 1″ NPT BOX |
| 97709360 | 1M. D25 THR. 1″ GAS BULK |
| 97709371 | 1M. D25 THR. 1″ NPT BULK |
Applications
Private Wells
- Shallow well water extraction
- Domestic well supply systems
- Rural property water supply
- Secondary water source systems
Rainwater Tanks
- Underground cistern pumping
- Above-ground tank systems
- Roof run-off collection systems
- Garden irrigation supply
Domestic Water Supply
- Household pressure boosting
- Villa water systems
- Holiday home supply
- Secondary non-potable systems
Model Selection Guide
| Application | Tank Depth | Pressure Need | Recommended Model |
|---|---|---|---|
| Shallow well, basic | Up to 10m | Standard | SB(A) 3-35 |
| Deeper well, higher pressure | Up to 15m | Higher | SB(A) 3-45 |
| Simple installation required | Any | Any | SBA variant |
| External control preferred | Any | Any | SB variant |
| Floating particles present | Any | Any | AW or MW variant |
| Clean water, fixed installation | Any | Any | A or M variant |
Variant Selection Guide
| Requirement | Recommended Variant |
|---|---|
| Automatic operation, simple install | SBA A or SBA M |
| Surface water quality preferred | SBA AW or SB AW |
| External control system available | SB A or SB AW |
| No float switch needed | SB MW or SBA MW |
| Maximum protection from debris | AW variants (floating suction) |
| Budget-conscious selection | SB A (with PM1/PM2) |
Why Choose Grundfos SB & SBA?
Silent Submersible Operation
Completely noiseless when submerged, unlike surface-mounted alternatives that can disturb household peace.
Premium Build Quality
Composite and stainless steel construction delivers corrosion resistance and long service life in well water and rainwater conditions.
Energy Efficiency Leadership
MEI ≥0.70 rating confirms these pumps meet the highest efficiency standards, minimizing electricity costs.
Comprehensive Protection
Integrated overheating and dry-running protection with automatic restart ensures worry-free operation.
Flexible Configuration
Multiple variants with fixed or floating strainers, with or without float switches, match any installation requirement.
All-in-One SBA Option
The SBA’s integrated controller eliminates external components, simplifying installation and reducing potential failure points.
Grundfos Accessories & Parts
Maintain optimal SB and SBA pump performance with original components including suction kits, floating strainers, non-return valves, cable assemblies, PM1/PM2 controllers, and replacement strainer elements. We stock parts for all SB and SBA variants.
Select Grundfos Pumps
Browse our complete inventory of Grundfos SB and SBA submersible pressure booster 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.
Contact us for:
- Model selection based on well depth and pressure requirements
- SB vs SBA variant recommendations
- Fixed strainer vs floating suction guidance
- Rainwater harvesting system design
- Competitive quotations
- Delivery schedules
Reliable Submersible Pressure Pumps Built to Your Needs
The Grundfos SB and SBA submersible pressure booster pumps deliver reliable, noiseless water supply from private wells and rainwater tanks. With energy efficiency meeting MEI ≥0.70, robust composite and stainless steel construction, and integrated protection against overheating and dry-running, these pumps provide worry-free domestic water supply. Choose the SB for flexibility with external control, or the SBA for plug-and-play simplicity with its integrated controller—either way, you get Grundfos reliability built for your needs.