Name: WaterBoost WB-Fixed 300 Litre Slimline 2302510
Brand: WaterBoost
SKU: wbkslimline-300-dtron
Price: 829.98 GBP
Availability: InStock

WaterBoost WB-Fixed 300 Litre Slimline 2302510

WaterBoost WB-Fixed 300 Litre Slimline 2302510 - Image 2

WaterBoost WB-Fixed 300 Litre Slimline 2302510 - Image 4

WaterBoost WB-Fixed 300 Litre Slimline 2302510 - Image 5

WaterBoost WB-Fixed 300 Litre Slimline 2302510 - Image 6

Established 1975
Trusted by thousands of customers

The WaterBoost WB-Fixed 300 Slimline is a complete, pre-assembled fixed-speed water boosting system designed as a cost-effective solution to low water pressure or restricted flow in 3–5 bedroom homes. A 300-litre WRAS-approved slimline tank (600mm dia × 1200mm high) pairs with the DAB Dtron2 internal fixed-speed pump, delivering a reliable 50 l/min at 3 bar.

The DAB Dtron2 sits submerged inside the tank — no external pump unit, keeping the footprint to a minimum. The tank fits through a standard doorway (600mm wide) and connects directly to the mains via the pre-fitted ¾” ball float valve. Fully pre-assembled — no site build required.

Supplied with ¾” ball float valve, 600mm connection hose, and By-law 30 kit. The tank carries a 5-year warranty and the DAB Dtron2 pump a 3-year warranty. Please contact us for delivery timescales.

50l/min

@ 3 bar

300L

Tank storage

1200mm

Tank height

5yr

Tank warranty

WRAS tank & pump
Internal pump
Fits through doorway
Direct mains
Pre-assembled
3yr pump warranty

Full Description

More about this product

Full Description

Product overview

The WaterBoost WB-Fixed 300 Slimline delivers reliable fixed-speed water pressure boosting for 3–5 bedroom homes, at the most accessible price in the standard slimline range. A 300-litre WRAS-approved slimline tank pairs with the DAB Dtron2 internal fixed-speed pump, delivering a consistent 50 l/min at 3 bar.

The Dtron2 sits submerged inside the tank — no external pump unit needed. The 600mm diameter tank fits through a standard doorway and stands 1200mm tall — easily sited under stairs, in a garage, or in a utility room. The mains supply connects directly via the pre-fitted ¾” ball float valve. Fully pre-assembled, no site build required.

Supplied with ¾” ball float valve, 600mm tank-to-pump connection hose, and By-law 30 kit. 5-year tank warranty and 3-year DAB Dtron2 pump warranty. Please contact us for delivery timescales.

50^l/min

Flow @ 3 bar

300^L

Tank storage

1200^mm

Tank height

5^yr

Tank warranty

Tank & pump WRAS approved · Direct mains · Pre-assembled

What’s included

DAB Dtron2 pump

Fixed speed internal pump — submerged inside the tank. Delivers 50 l/min at 3 bar. WRAS approved. Pre-fitted plug. 3-year DAB warranty.

300L slimline tank

WRAS-approved 300-litre upright slimline tank — 600mm dia × 1200mm high. Fits through a standard doorway. Pre-fitted ¾” ball float valve and By-law 30 kit. 600mm connection hose included. Fully pre-assembled. 5-year tank warranty.

Key features

50 l/min @ 3 bar

Higher flow than the Powertank fixed speed alternatives — 50 l/min suits 3–5 bedroom properties with multiple simultaneous outlets.

Internal pump — submerged in tank

DAB Dtron2 sits inside the tank — no external pump unit required. Smallest possible footprint, naturally quiet operation.

Fits through a standard doorway

600mm diameter × 1200mm high — designed to pass through a standard doorway without disassembly for both new and existing properties.

Direct mains connection

Tank fills automatically via the pre-fitted ¾” ball float valve. Minimum 0.5 bar incoming pressure required.

Fully pre-assembled

Arrives ready to install — no site assembly required. Supplied with ¾” ball float valve, 600mm hose, and By-law 30 kit.

WRAS approved — potable water

Both tank and pump carry WRAS approval — fully compliant for potable water use in the UK.

5-year tank + 3-year pump warranty

5-year warranty on the WRAS slimline tank and 3-year DAB manufacturer warranty on the Dtron2 pump.

Lowest price in the fixed slimline group

More storage, higher flow, and better warranties than comparable fixed-speed slimline systems — at the lowest price of the three.

Want variable speed and WiFi?

The WB-INT Slimline 300 (£1,027.75 + VAT) uses the same tank with the DAB Esybox Diver — 100 l/min, 5 bar, WiFi, Google and Alexa.

Typical applications

3–5 bedroom homes

Reliable 50 l/min @ 3 bar across multiple simultaneous outlets — showers, taps, and appliances running together without pressure drop.

New and existing properties

Fits through a standard doorway pre-assembled — easy to install in both new builds and existing properties without specialist access.

Under stairs, garage, utility room

600mm diameter fits neatly in standard domestic spaces without structural alterations.

Budget-conscious installations

Where reliable fixed-speed boosting is needed at accessible price — without the cost premium of variable speed or WiFi.

Slow or intermittent mains supply

300L fills overnight as a buffer — ready for peak morning and evening demand even on a slow or restricted mains supply.

Water Regulations compliance

Tank and ball float valve provide the required break between mains and pump — fully compliant with Water Regulations.

Technical specifications

DAB Dtron2 pump

Flow rate	50 l/min @ 3 bar
Pump type	Fixed speed — internal (submerged)
Supply	240V, 50Hz — pre-fitted plug
WiFi / app	No
WRAS	Yes
Warranty	3 years (DAB)

Slimline tank

Capacity	300 litres
Dimensions (dia × H)	600mm × 1200mm
Mains inlet	Direct — ¾” BSP ball float valve
WRAS	Yes — WRAS-approved material
Assembly	Fully pre-assembled
Min inlet pressure	0.5 bar recommended
Warranty	5 years

How it compares

Three fixed-speed slimline upright boosting systems. The WB-Fixed 300 is the cheapest of the three, yet has the most storage, the highest flow, and named 5-year tank and 3-year pump warranties. The Powertank SLIMLINE options offer Fluid Category 4 compliance for non-potable applications.

Feature	WB-Fixed 300 Slimline this product	Powertank SLIMLINE 200 Fixed	Powertank SLIMLINE 350 Fixed
Tank capacity	300L WRAS slimline	200L WRAS slimline	350L WRAS slimline
Pump type	Fixed speed (DAB Dtron2 — internal)	Fixed speed (Presflo Multi — external)	Fixed speed (Presflo Multi — external)
Flow rate @ 3 bar	50 l/min	40 l/min	40 l/min
Pressure vessel	None (fixed speed — not needed)	Yes — 3L integral	Yes — 3L integral
Fluid Category	Cat 1–3 (potable)	Up to Cat 4	Up to Cat 4
Tank warranty	5 years	Contact us	Contact us
Pump warranty	3 years (DAB)	Contact us	Contact us
Price (ex VAT)	£691.65	£744.60	£775.00

Which should I choose?
WB-Fixed 300 Slimline — the strongest all-round fixed-speed option at the lowest price (£691.65 + VAT). More storage than either Powertank, higher flow (50 vs 40 l/min), internal pump, named 5yr tank and 3yr pump warranties. The right choice for potable water boosting in 3–5 bedroom homes.
Powertank SLIMLINE 200 Fixed — choose if Fluid Category 4 compliance is required and storage and flow requirements are modest. 200L / 40 l/min. £744.60 + VAT.
Powertank SLIMLINE 350 Fixed — choose for Fluid Category 4 with more storage (350L). Still 40 l/min. At £775.00 + VAT it is more expensive than the WB-Fixed 300 with lower flow and no named warranties. Choose only if Cat 4 is required.

Frequently asked questions

How much does it cost and how is it delivered?

£691.65 + VAT (£829.98 inc VAT). Please contact us via WhatsApp or phone for delivery timescales on this product.

What is the DAB Dtron2 and how does it differ from the Esybox Diver?

Both sit submerged inside the tank, but the DAB Dtron2 is a fixed-speed pump — it runs at a constant speed and delivers a consistent 50 l/min @ 3 bar. It’s simpler, lower cost, and carries a 3-year warranty. The Esybox Diver (used in the WB-INT Slimline 300 Variable Speed) is a variable speed pump delivering up to 100 l/min and 5 bar, with built-in WiFi, DConnect app, Google Home, and Alexa. Choose the Dtron2 for reliable fixed-speed performance at a lower cost; the Esybox Diver for maximum performance and smart home integration.

How does the mains connection work?

The mains supply connects directly to the tank via the pre-fitted ¾” ball float valve. The tank fills automatically. The Dtron2 draws from the tank and boosts pressure throughout the property. A minimum of 0.5 bar incoming pressure is required.

Should I choose fixed speed or variable speed?

Fixed speed (this product) is simpler, lower cost, and delivers consistent 50 l/min @ 3 bar. It’s an excellent choice where flow demand is moderate and steady. Variable speed (the WB-INT Slimline 300 at £1,027.75 + VAT) adjusts continuously to match demand — more energy-efficient at low demand, quieter at low draw, and capable of significantly higher flow (100 l/min) and pressure (5 bar). Variable speed also includes WiFi and voice control. If budget allows and higher performance is beneficial, the variable speed system is worth considering.

Will it fit through my doorway?

Yes — at 600mm diameter, the tank passes through a standard UK doorway (760mm minimum clear opening) without disassembly. If your access point is particularly narrow, please contact us to confirm suitability.

What warranties are included?

5 years on the WRAS slimline tank and 3 years DAB warranty on the Dtron2 pump, when purchased from Anglian Pumping Services.

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Delivery Information

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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