Lowara SMB20 HME Booster Set
Lowara SMB20/5HME06S11/2/UK booster set 1003100503
- Established 1975
- Trusted by thousands of customers
The Lowara SMB20/A/5HME06S11/M2/UK (1003100503) is a twin-pump variable speed booster set built on two Lowara e-HME horizontal stainless steel multistage pumps, each with a 1.1 kW permanent magnet motor and integrated inverter. It holds a constant set pressure as demand rises and falls, running quietly and without water hammer from a standard 230V single-phase supply.
A simple, pre-built plug-and-pump set for apartments, larger homes, hotels, restaurants and light commercial buildings where steady pressure and a standby pump matter.
Twin pump duty/standby
Stainless steel e-HME
WRAS approved
2-year warranty
More about this product
Lowara SMB20 5HME06 twin booster set
The Lowara SMB20/A/5HME06S11/M2/UK (part number 1003100503) is a compact twin-pump booster set from Xylem’s Lowara SMB range, designed for water pressure boosting and transfer. Two 5HME06S horizontal multistage pumps in stainless steel are mounted on a common base with suction and delivery manifolds, pressure transducers and integrated variable frequency drives — ready to connect and commission.
Each pump runs on a 1.1 kW permanent magnet motor with its own inverter, so the set speeds up and slows down to match demand rather than switching hard on and off. The result is constant pressure at the taps, lower energy use, quieter running and no water hammer — all from a 230V single-phase supply, with no three-phase power needed.
Key features
Technical specification
| Model | SMB20/A/5HME06S11/M2/UK |
| Part number | 1003100503 |
| Booster range | Lowara SMB20 (twin pump) |
| Pumps | 2 × 5HME06S |
| Pump type | e-HME horizontal multistage, stainless steel |
| Motor power | 1.1 kW × 2, permanent magnet with integrated drive |
| Power supply | 230V single phase |
| Control | Variable speed, constant pressure |
| Pressure sensing | One transducer per pump, 4–20 mA |
| IP rating | IP55 |
| Max operating pressure | 10 bar |
| Max liquid temperature | 50°C |
| Communication | Modbus / BACnet (optional cards) |
| Approval | WRAS approved for drinking water |
Applications
Apartments, single and multi-family houses, condominiums and residential blocks.
Hotels, restaurants and spas needing steady pressure at peak demand.
Offices, schools and water transfer duties where a standby pump is required.
How it works
The set draws water from a break tank or suitable supply and holds the outlet at your chosen pressure. At low demand a single pump runs at reduced speed; as more outlets open it speeds up, and the second pump cuts in to share the load at peak flow. Pumps alternate duty to even out wear, and if one is out of service the other carries on — so the building keeps its water.
Need more or less duty? See the full Lowara SMB20 HME booster set range.
FAQs
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Standard delivery:
Standard delivery is free on most orders. Some items may incur a delivery charge depending on weight, size or value. Any applicable charge will be displayed at checkout.
Deliveries will typically be made between 7am and 6pm, Monday to Friday (excluding public holidays).
Next day delivery:
Next working day delivery is available for a £16.50 + VAT delivery charge.
Orders must be placed before 12 noon to qualify for next working day delivery. Orders placed after 12 noon on Thursday but before noon on Friday will be delivered the following Monday. Orders placed after 12 noon on Friday will be delivered on Tuesday.
Pallet/Large/Difficult items:
Some large, heavy or difficult to transport items may incur an additional delivery charge. Please contact us for a delivery quote before ordering.
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Frequently Asked Questions
Quick answers to common questions about the Lowara SMB20/5HME06S11/2/UK booster set 1003100503. For technical specifications, see the product details above; for sizing or installation advice, contact our team. If you have any other questions, we're happy to help.
What is a water booster pump?
A water booster pump increases the pressure of an existing water supply to give stronger flow at taps, showers and appliances. It can be a small inline pump fitted to the incoming mains, or a larger pump and tank set that draws from a break tank to feed the whole house. Boosters do not create water – they raise the pressure of the water already coming in.
What is the difference between an inline booster and a tank-and-pump booster?
An inline booster connects straight onto the incoming mains and is limited to 12 litres per minute under UK water regulations – examples include the Salamander HomeBoost and WaterBoost WB-Compact. A tank-and-pump booster, such as the Grundfos Home Booster or DAB Esybox with Esytank, draws from a break tank and can deliver much higher flow rates for larger homes with multiple bathrooms.
What is a variable speed booster pump?
A variable speed booster uses an inverter to adjust pump speed in real time to match demand. It maintains constant pressure as outlets open and close, runs more quietly than a fixed-speed pump and typically saves up to 50 per cent of the energy a fixed-speed equivalent would use. The DAB Esybox, DAB Esybox Mini 3 and Grundfos Scala2 are common variable speed examples.
What are centrifugal pumps used for?
Centrifugal pumps use a rotating impeller to move liquids and are commonly used for water transfer, circulation and industrial processes.
How do I choose a centrifugal pump?
Compare the required flow rate, total head, liquid characteristics and electrical supply with each pump’s performance curve.
Are centrifugal pumps suitable for dirty water?
Some are designed for clean water only, while others handle solids or wastewater. Check the particular pump’s permitted liquid and solids specification.
What does a water booster pump do?
A water booster pump raises water pressure to help supply taps, showers and other outlets when the existing system cannot meet demand.
Can a booster pump connect directly to the water mains?
Not every booster can. Direct connection depends on the product design and applicable water regulations; some systems require a break tank.
How do I size a water booster pump?
Assess simultaneous flow demand, required outlet pressure, available inlet conditions and the pressure losses in the pipework.