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Accumulator Vessels – Composite

GWS 130 litre Composite Accumulator C2B-130LV

In stock

Our Price £313.20 Inc VAT £261.00 Ex VAT
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  • Established 1975
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GWS 130 litre Composite Accumulator C2B-130LV

Offering a lightweight composite solution with proven performance, the C2Lite CAD™ series has been designed with the patented controlled action diaphragm designs of GWS Challenger™ tanks.

8.6 bar
Max. pressure
130 litres
Capacity
Global Water Solutions
More about this product

Frequently Asked Questions

Quick answers to common questions about the GWS 130 litre Composite Accumulator C2B-130LV. 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.

What is an accumulator tank?

An accumulator tank is a pressurised vessel that connects directly to the mains supply and stores water under pressure. When a tap or shower opens, water discharges immediately from the vessel at full mains pressure rather than drawing only from the street main. This delivers stronger, more consistent flow at peak times. Accumulators have no pump and no moving parts so they are maintenance free and silent.

When should I use an accumulator instead of a pump?

An accumulator is the right solution when static mains pressure is adequate – above 2 bar – but flow is poor or drops during peak demand. It boosts available flow without adding a pump, energy use or noise. If static pressure is below 2 bar, a booster pump is needed instead, or an accumulator combined with a charge pump such as the WaterBoost ACF1.

What size accumulator do I need?

Accumulators are typically sized on a 60 per cent usable rule – a 300 litre vessel delivers around 180 litres of boosted water per cycle. As a guide, a 2 to 3 bedroom home suits a 300 litre vessel such as the GWS GCB-300LV. Larger 4 to 5 bedroom homes or properties with multiple bathrooms typically need 450 to 600 litres. Vertical models save floor space, horizontal models suit lofts and roof spaces.

What is a pressure vessel used for in a pumping system?

A pressure vessel stores water under pressure, helping maintain supply and reduce unnecessary pump starts.

What is the difference between an accumulator and an expansion vessel?

Accumulators provide pressurised water storage, while expansion vessels accommodate volume changes caused by temperature; product suitability depends on system design.

How do I choose a pressure vessel?

Consider intended use, capacity, maximum working pressure, pre-charge requirements, installation orientation and potable-water suitability.