STORMBOOST Range
Stuart Turner Stormboost 300 47718
- Established 1975
- Trusted by thousands of customers
The STORMBOOST 300 is the new upgraded and enhanced direct replacement for the original Flomate MBF-300.
STORMBOOST 300 is designed to be connected directly to the incoming cold water mains and activate automatically when a tap is opened or a shower is switched on, boosting mains water pressure and flow throughout the property.
It will deliver up to 27 litres/min flow at up to 3.2 bar pressure for up to 11 minutes after which time it will deliver up to 12 litres/minute continuously until demand ends and the pressure vessel recharges*.
* The actual flow rate may less less than this and is dependent on the mains supply flow available.
APPLICATIONS
- Boosting mains water pressure to one or two bathroom properties fitted with a combi-boiler
- STORMBOOST 300 fits neatly within a standard 600mm wide kitchen larder unit
More about this product
- Boosts mains water pressure up to 3.2 bar
- Output flow rate up to 27 litres/minute for up to 11 minutes
- 300 litre nominal capacity pressure vessel
- Switches on/off automatically
- Quiet operation
- High quality, robust brass pump body and impeller
- High reliability induction motor
- Integral bypass
- Anti-seize exercise function
- Dry run protection
- Anti-vibration connection hoses included
- WRAS Approved Product
- 3 year warranty
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 Stuart Turner Stormboost 300 47718. 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 mains pressure boosting system?
A mains pressure boosting system increases the pressure and flow of water from the incoming mains supply into a property. It typically combines a pump and a storage or expansion tank, drawing water from the mains and delivering it to taps, showers and appliances at a stronger, more consistent pressure. They are used where the incoming mains is too weak to serve modern outlets reliably.
When do I need a mains booster pump?
You normally need a mains booster if static mains pressure is below 1.5 to 2 bar, if showers run weakly when other taps are open, or if combi boilers struggle to deliver hot water. Anglian Pumping recommends checking static pressure at the stop tap before specifying a system, then choosing a model rated for the number of bathrooms and outlets in the property.
What size mains booster do I need for my home?
Sizing depends on the number of bathrooms, the type of fittings and the static mains pressure. As a guide, a 1 to 2 bathroom property with combi boiler or single shower often needs 1.6 to 3 bar boost. A 2 to 3 bathroom property typically needs 3 to 4.5 bar with an integral break tank. Larger homes need a tank-and-pump system such as the DAB Esybox with Esytank or a Powertank set.

