WaterBoost AWB-450LV — 450 Litre Vertical Accumulator Vessel

The WaterBoost AWB-450LV is a 450-litre WRAS-approved vertical accumulator vessel for mains-connected water systems. Accumulators store mains water under pressure — so when you open a tap or shower, you draw instantly from the vessel at full mains pressure rather than waiting for the mains to respond. The result is a noticeably stronger, more consistent flow from every outlet, even during peak demand.

The AWB-450LV operates on a 60% usable volume ratio — delivering approximately 270 litres of high-pressure water before returning to normal mains flow. At a typical shower flow of 12 l/min, 270L supports two simultaneous showers for approximately 11 minutes, or three simultaneous showers for approximately 7.5 minutes before returning to normal mains flow. Diaphragm design, WRAS-approved construction, maintenance free. The AWB-450LV is suited to 3 bedroom+ and larger properties with higher simultaneous demand.

Requires a minimum 2 bar static mains pressure to operate effectively. If your static pressure is below 2 bar, add the WaterBoost ACF1 accumulator booster pump to charge the vessel to the required working pressure.