WaterBoost – Coffin
WB-Coffin 320 Esybox Variable Speed 2206110
- Established 1975
- Trusted by thousands of customers
The WaterBoost WB-Coffin 320 Esybox is a compact, variable-speed water boosting system engineered to overcome low water pressure or restricted flow in domestic and light commercial applications. Designed for installations where space is limited, it provides a cost-effective solution while still delivering exceptional reliability, performance, and build quality.
The system combines a durable 320-litre WRAS-approved coffin-style Polytank with the proven DAB Esybox booster pump, delivering efficient and consistent pressure boosting of up to 80 litres per minute at 3 bar. This makes it ideal for properties requiring enhanced performance across showers, taps, and appliances without the footprint or complexity of larger boosting systems.
With compact dimensions of 1650mm (L) × 610mm (W) × 500mm (H), the WB-Coffin 320 Esybox is perfectly suited to installations where height restrictions or limited access are key considerations, including garages, cupboards, and plant rooms.
For added convenience, the tank is supplied pre-fitted with a By-law 30 kit and ½” ball valve, and all interconnecting pipework is included as standard — ensuring installation is swift, clean, and straightforward. Energy-efficient operation is delivered through the Esybox’s advanced variable-speed control, providing smooth, stable pressure while helping to minimise running costs.
More about this product
WB-Coffin 320 Esybox– Variable Speed System Contents
The WB-Coffin 320 Esybox is supplied as a complete, ready-to-install water boosting system, combining a WRAS-approved coffin tank with a high-efficiency variable-speed booster pump.
System Includes
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320-litre WRAS-approved Polytank (coffin configuration)
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DAB Esybox variable-speed booster pump
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Integrated inverter control
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Supplied with 3-year manufacturer’s warranty
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½″ ball float valve and float assembly
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Tank-to-booster interconnecting pipework (pre-configured for ease of installation)
All components are selected to ensure reliable performance, compliance with UK water regulations, and straightforward installation.
Tank Specification
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WRAS-approved Polytank Byelaw 30 kit
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Installation and fitting instructions included
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½″ BS1212 Part 2 ball valve with 4½″ float
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Ball valve back plate
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22 mm compression tank connector
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15 mm × ½″ angled service valve
The coffin-style tank design provides a compact, low-profile solution, ideal for installations with restricted headroom.
Booster Pump Overview – DAB Esybox
The DAB Esybox is a proven, best-selling water booster pump, widely used in domestic and small commercial installations. Fully integrated and digitally controlled, it automatically adjusts pump speed to maintain consistent water pressure, even under fluctuating demand.
Compact, energy-efficient, and exceptionally quiet in operation, the esybox delivers smooth pressure boosting while minimising energy consumption and running costs. Its all-in-one design makes it a reliable and installer-friendly choice for tank-fed water boosting systems.
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.
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