WaterBoost ATX-200 Accumulator Booster System

WaterBoost ATX-200 Accumulator Booster System - Image 3

WaterBoost ATX-200 Accumulator Booster System - Image 4

WaterBoost ATX-200 Accumulator Booster System - Image 5

WaterBoost ATX-200 Accumulator Booster System - Image 6

WaterBoost ATX-200 Accumulator Booster System - Image 7

Established 1975
Trusted by thousands of customers

The WaterBoost ATX-200 is a fully integrated accumulator booster system that connects directly to the incoming cold water mains. It combines a 200-litre sealed accumulator vessel with a variable speed pump in a single compact unit — automatically boosting both pressure and flow throughout the property the moment a tap or shower is opened. No break tank, no overflow arrangement, just two water connections required.

The system delivers a peak burst flow of up to 45 l/min and up to 22 l/min at 3.2 bar for up to 11 minutes — enough for two showers running simultaneously — before settling to a continuous boosted flow of 12 l/min at 3 bar until the vessel recharges. Variable speed inverter technology maintains smooth, stable pressure with minimal noise at 40 dB(A). WiFi via the DConnect app enables remote monitoring and control. Includes dry run protection, anti-seize exercise function, and WRAS-approved pump body materials. A mains bypass can be installed in seconds using 2 clips if the unit ever requires maintenance.

WRAS approved product. Sealed system design — no air contamination. Suited to 1–2 bathroom properties. 5-year tank warranty, 3-year pump warranty. For higher volume requirements, see the ATX-300.

45l/min

Peak flow

3.2bar

Max pressure

40dB(A)

Noise

5yr tank
3yr pump

Warranty

WiFi · DConnect app
WRAS approved
Variable speed
Direct mains — no overflow
Dry run protection
Anti-seize function
Bypass fits with 2 clips

Full Description

More about this product

Full Description

What is the ATX-200?

The WaterBoost ATX-200 is a fully integrated accumulator booster system that connects directly to your incoming cold water mains supply. It combines a 200-litre sealed accumulator vessel with a variable speed pump in a single compact unit — automatically boosting both pressure and flow throughout the property the moment a tap or shower is opened, with no break tank, no overflow arrangement, and just two water connections required.

Unlike a simple inline mains booster, the ATX-200 stores a large volume of mains water under pressure inside the accumulator. This means it can deliver a peak burst flow of up to 45 l/min — far exceeding what the mains alone could supply in that moment — and then sustain 22 l/min at 3.2 bar for up to 11 minutes before the vessel recharges. Once discharged, the system continues to deliver a boosted 12 l/min at 3 bar continuously until demand ceases and the vessel refills.

The sealed design eliminates the need for a traditional overflow, and the variable speed pump keeps noise to a measured 40 dB(A). WiFi via the DConnect app enables remote monitoring and control. Dry run protection and an anti-seize exercise function are built in, and the pump body uses WRAS-approved materials throughout. If the unit ever requires maintenance, a mains bypass can be installed in seconds using just 2 clips.

45^l/m

Peak burst flow

3.2^bar

Max pressure

40^dB

Noise at 1m

200^L

Accumulator

WRAS approved · 5yr tank · 3yr pump

How it works

1 — Vessel pre-charges from mains

On installation and after each use, the variable speed pump charges the 200-litre accumulator vessel to the set working pressure, storing a ready supply of pressurised water.

2 — Demand triggers instant delivery

The moment a tap or shower opens, the system activates automatically — delivering an immediate burst of up to 45 l/min, then sustaining 22 l/min at 3.2 bar for up to 11 minutes.

3 — Continuous flow & recharge

After the stored volume is exhausted, the system continues to deliver a boosted 12 l/min at 3 bar directly from the mains. When demand ends, the vessel recharges automatically ready for the next use.

Two-phase operation. Phase 1 — stored volume: up to 22 l/min at 3.2 bar for up to 11 minutes (enough for two showers running simultaneously). Phase 2 — continuous mains: 12 l/min at 3 bar until demand ceases. Actual flow rates are dependent on the incoming mains supply available.

Key features

Variable speed pump

Inverter-driven variable speed motor adjusts output to match demand — delivering smooth, stable pressure without the surging of a fixed-speed pump, and significantly lower energy consumption.

40 dB(A) — whisper quiet

Water-cooled motor design keeps noise to a measured 40 dB(A) — quieter than a normal conversation and well suited to kitchen larder or utility room installation.

WRAS approved — pump body materials

The pump body is constructed from WRAS-approved materials, ensuring safe contact with potable water throughout. The complete system carries WRAS product approval.

Dry run protection

Built-in dry run protection prevents pump damage if the system runs without water — an important safeguard during initial installation or in the event of a mains interruption.

Anti-seize exercise function

An automatic anti-seize exercise function periodically runs the pump during periods of low demand — preventing the impeller from seizing during prolonged inactivity such as when a property is unoccupied.

Mains bypass in seconds

If the unit ever requires maintenance, a mains bypass can be fitted in seconds using just 2 clips — keeping the property on a direct mains supply throughout the service period.

The ATX-200 also features a sealed system design requiring no overflow arrangement, just 2 water connections for installation, and a built-in WiFi connection to the DConnect app for remote monitoring and control.

Technical specifications

Brand / Model	WaterBoost — ATX-200
System type	Integrated accumulator booster system
Connection	Direct mains (2 water connections)
Accumulator capacity	200 litres
Peak burst flow	Up to 45 l/min
Boosted flow (stored volume)	Up to 22 l/min at 3.2 bar for up to 11 minutes
Continuous flow (post-discharge)	12 l/min at 3 bar
Max pressure	3.2 bar
Pump type	Variable speed (inverter controlled)
Noise level	40 dB(A)
Pump body	WRAS-approved materials
Dry run protection	Yes
Anti-seize exercise function	Yes
WiFi / connectivity	Yes — DConnect app
Overflow required	No — sealed unit
Maintenance bypass	Fitted in seconds using 2 clips
WRAS approved	Yes — WRAS approved product
Warranty	5-year tank · 3-year pump
Suited to	1–2 bathroom properties · combi-boiler homes

How it compares

Feature	WaterBoost ATX-200	Stuart Turner Stormboost 200
Tank capacity	200 litres	200 litres
Connection type	Direct mains	Direct mains
Peak burst flow	Up to 45 l/min	Up to 22 l/min
Boosted flow (sustained)	22 l/min for up to 11 min	22 l/min for up to 11 min
Continuous flow (post-discharge)	12 l/min at 3 bar	12 l/min
Max pressure	3.2 bar	3.2 bar
Pump type	Variable speed	Fixed speed (induction motor)
Noise	40 dB(A)	Quiet (no dB rating stated)
WiFi / app control	Yes — DConnect app	No
Overflow required	No — sealed unit	No
Maintenance bypass	2-clip fit — seconds	Integral bypass
Water connections	2 connections	Anti-vibration hoses included
Dry run protection	Yes	Yes
Anti-seize exercise function	Yes	Yes
Pump body	WRAS-approved materials	Brass body & impeller
WRAS approved	Yes	Yes
Warranty	5yr tank · 3yr pump	3 years

Flow rates are dependent on incoming mains supply. Continuous flow of 12 l/min applies after the stored volume has been exhausted and the system returns to mains-only supply.

Frequently asked questions

What is the difference between the ATX-200 and a standard accumulator with a separate pump?

A standard standalone accumulator paired with a separate boost pump requires individual components to be sourced, pipework between them, and typically an overflow arrangement. The ATX-200 integrates everything into a single sealed unit — accumulator, pump, and controls — with just two water connections and no overflow required. Dry run protection, anti-seize function, variable speed pump, and WiFi connectivity all come as standard.

What does “peak burst flow of 45 l/min” mean in practice?

The peak burst figure is the maximum instantaneous flow the system can deliver at the moment a tap or shower first opens — drawing simultaneously from the pressurised accumulator vessel. This quickly settles to the sustained boosted flow of 22 l/min at 3.2 bar, which the system maintains for up to 11 minutes.

What happens after the 11 minutes of boosted flow?

Once the stored volume in the accumulator has been used, the system continues to supply water directly from the mains at a boosted 12 l/min at 3 bar. When demand stops, the accumulator recharges automatically. Actual flow rates depend on the incoming mains supply available.

How does the maintenance bypass work?

If the unit needs to be taken offline for servicing, a mains bypass can be installed in seconds using just 2 clips. This diverts the supply directly from the mains, keeping the property on running water throughout the maintenance period. No tools or specialist knowledge required.

Is the ATX-200 suitable for a combi-boiler property?

Yes. The ATX-200 is designed for direct mains connection and is well suited to combi-boiler homes, boosting both hot and cold flow throughout the property. Installation should comply with Water Regulations and be carried out by a qualified plumber.

Is a larger version available?

Yes. The ATX range also includes the ATX-250 and ATX-300 for properties with higher demand or more bathrooms. If you are unsure which size is right for your property, contact us and we will advise.

Delivery Information

Standard delivery:

Standard delivery is free for all orders except for some low cost/low margin items where standard delivery is £6.75. Some difficult to transport goods also have a varying carriage charge applied.

Please contact us for the estimated standard delivery times of the products that we have in stock, by dropping us a message on our Whatsapp or Live chat.

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 £15.00 + 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.

More about this product

Related products