Ebara 1 GPE Variable Speed Booster Set
Ebara 1 GPE Matrix 5-4T/0.9 ESPM 230v
- Established 1975
- Trusted by thousands of customers
Ebara 1 GPE Matrix 5-4T/0.9 variable-speed booster set. A 4-stage Matrix stainless steel pump with E-SPD+ inverter and 2-litre vessel, holding constant pressure quietly and without water hammer. Supplied assembled, tested and pre-programmed.
- Up to 46 m head, flows to 7.8 m³/h
- 0.9 kW, 230v single phase, IP55
- WRAS approved for drinking water use
- Variable speed control — constant pressure, lower running costs
More about this product
The Ebara 1 GPE Matrix 5-4T/0.9 ESPM 230v is a single-pump, variable-speed booster set delivering up to 46 m of head and flows to 7.8 m³/h. It pairs the 4-stage Ebara Matrix 5-4T stainless steel pump with the E-SPD+ inverter and a 2-litre expansion vessel, holding constant pressure as demand changes — quietly and without water hammer. Supplied fully assembled, tested and pre-programmed.
Performance
Head delivered across the working flow range (clean water, ≈ 2850 rpm, to ISO 9906:2012 Grade 3B):
| Flow m³/h | 0 | 1.8 | 2.7 | 3.6 | 4.8 | 6 | 7.8 |
|---|---|---|---|---|---|---|---|
| l/min | 0 | 30 | 45 | 60 | 80 | 100 | 130 |
| Head m | 46 | 43 | 41 | 38.6 | 34.7 | 29.4 | 17.6 |
Specification
| Motor power | 0.9 kW (1.2 HP) |
| Power supply | 230v / 1ph / 50Hz |
| Full load current | 5.7 A |
| Stages / impellers | 4 |
| Max head | 46 m |
| Recommended max flow | 7.8 m³/h |
| Protection / insulation | IP55 / Class F |
| Speed | ≈ 2850 rpm |
| Max working pressure | 10 bar |
| Liquid temperature | -15°C to +85°C |
| Suction / discharge | G 1¼” / G 1″ |
| Hydraulic materials | Stainless steel AISI 304 |
| Sound level | 62 dB(A) at 1 m |
| Drinking water | WRAS approved |
How it works
A pressure transducer monitors the system and signals the E-SPD+ drive to vary pump speed in real time, holding your set pressure from a single open tap to full demand. Compared with on/off pressure-switch control this cuts energy use, removes water hammer and reduces wear.
- Ebara Matrix 5-4T/0.9 multi-stage stainless steel pump (WRAS approved)
- E-SPD+ motor-mounted variable speed drive with external pressure transducer
- 2-litre expansion vessel
Typical applications
Domestic and light-commercial pressure boosting, top-up where mains pressure is low or inconsistent, limited garden irrigation, vehicle and equipment washing, and general clean-water transfer.
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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 Ebara 1 GPE Matrix 5-4T/0.9 ESPM 230v. 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.