In Line Micro Pump
A compact, powerful, and energy-efficient. Boosts water pressure for showers, taps, radiators and much more with quiet operation and easy installation. WRAS approved for reliable performance.
Features & Benefits
Compact and Powerful In-Line Micro Pump
The Flowflex In-Line Micro Pump is the ideal solution for tackling low water pressure issues throughout your home. Whether you’re struggling with a weak shower, insufficient water flow to taps, or a cold radiator, this compact pump delivers up to 1.1 bars of pressure and a flow rate of 6-8 litres per minute. Using just 5% of the energy required by traditional pumps, it’s an eco-friendly option for boosting water pressure efficiently.
Designed for easy installation, the In-Line Micro Pump is suitable for any DIY enthusiast. It can be fitted in various orientations and even underwater, making it incredibly versatile. With its quiet operation and compatibility with multiple plumbing systems including electric showers, boreholes, and solar thermal applications, this pump is the perfect addition to enhance your home’s water supply. Backed by a WRAS certification and a robust design, it promises reliable performance and long-term durability.
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Easy Installation
The In-Line Micro Pump is user-friendly and can be installed by any DIY enthusiast without professional help, saving time and money.
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Energy Efficient
Operating at just 5% of the energy consumption of traditional pumps, this pump offers significant energy savings while boosting water pressure.
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Quiet Operation
Designed for quiet performance, the In-Line Micro Pump operates at less than 50 dB, ensuring minimal noise disruption in your home.
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Suitable for Many Applications
Suitable for a wide range of applications including showers, taps, radiators, and more, providing flexibility and convenience.
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WRAS Approved
Independently verified to fall in line with UK Water Regulations, this pump is safe for installation in your home.




Compatible With Any Home
Where Can I Install The In-Line Micro Pump?
The In-Line Micro Pump is a small, compact and flexible solution which can be used with any plumbing system. It can be installed by anyone almost anywhere, in any orientation. Even underwater. This unique ease of installation means the In-Line Micro Pump can boost the water supply to any of your appliances or outlets.
Irrigation
Solar Thermal
Gravity Fed Systems
Combination Boilers
Taps
Boreholes / Wells
Rain Showers
Radiators
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Frequently Asked Questions
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Contact SupportHow Do You Install The In-Line Micro Pump?
The In-Line Micro Pump uses traditional compression connections, allowing for a really simple installation onto standard issue Copper Pipe. Lastly, you will just need to connect the pump to a standard 12V plug to supply power. Full installation instructions can be found on our installation page.
Why Is The Pump Not Activating In When The Water Is Turned On?
Sometimes if the water flow is too low, you cannot rely on the flow-switch on its own. Instead you may need to reconfigure the wiring so that the pump is activated by the power supply. In this case you can connect the pump to a three-pin plug socket, a light switch or make use of a radio remote. This will allow you to active the pump when required, rather than leaving it on at all times.
Is It Legal To Pump Mains Water?
The In-Line Micro Pump can legally pump low water mains pressure in the UK and Scotland. In the UK it is illegal to take more than 12 litres/minute from the mains supply. Luckily the In-Line Micro Pump delivers a flow-rate just short of this maximum limit, allowing you to conform to the water bylaws.
Is The In-Line Micro Pump WRAS Approved?
Yes, the In-Line Micro Pump has WRAS Certification.
How Can I Check And Remove Any Air Trapped In The System?
Air trapped in the pipework can significantly reduce flow. If the pump runs but the LED fluctuates between a solid and flashing blue light, it is likely trapped air. Remove any shower head, fully turn on the shower and plug the power supply directly into the white motor (bypassing the electronic brain). This will maximise flow and pass most pockets of trapped air. If the hot pipe near the cylinder rises into the loft, across and down to the outlet, an ‘inverted U’ is created which may trap a column or air with no means of escaping. A solution is to tee the pipe into the vent pipe and fit the Shower Power Booster there.
Can I Check The Shower Power Booster Pump Before Installation?
Yes, we recommend that you carry out the following pre fitting checks. These can be found in your instruction manual.
Any Questions?
Our team is available for you anytime.