120 litre stainless steel domestic water heater complete with venturi device

EXCELSIOR WXI

Stainless steel domestic and commercial water heaters with Fabdec’s patented Venturi device, designed to remove the need for a separate external expansion vessel.

  • Domestic & Commercial
  • Patented Venturi Device
  • No External Expansion
  • Standard WXI Range
  • WXI Hi-FLO Option
  • Made in Britain
Standard WXI Range
80–500 Litres
WXI Hi-FLO Range
255–500 Litres
Application
Domestic / Commercial
Expansion
Internal Expansion
Material
Stainless Steel

The EXCELSIOR WXI Water Heater

EXCELSIOR WXI water heaters are stainless steel cylinders designed for domestic and commercial hot water systems. Each model is fitted with Fabdec’s patented Venturi device, which removes the need for a separate external expansion vessel while helping to maintain the internal air gap inside the cylinder.

The range is available in two configurations. Standard EXCELSIOR WXI models are available in direct and indirect options from 80 to 500 litres, while EXCELSIOR WXI Hi-FLO models are indirect vessels with 28mm stainless steel inlet and outlet connections for higher flow-rate requirements.

80 litre stainless steel domestic water heater WXI

EXCELSIOR WXI & WXI Hi-FLO Dimensions

WXI diagram showing tank dimensions
Size Standard Dimensions Direct Model Indirect Model
H D I O T IH1 IH2 CR1 CF1 Coil Rating
80L 703 576 182 * 222 196 N/A 213 88 14.6kW
100L 860 576 182 * 318 196 457 213 88 14.6kW
130L 1,043 576 182 221 331 196 540 213 193 14.6kW
150L 1,235 576 182 285 395 196 613 213 193 14.6kW
175L 1,370 576 182 397 507 196 673 213 263 20.0kW
215L 1,666 576 182 440 550 196 754 213 263 20.0kW
255L 1,884 576 182 440 550 196 780 213 263 20.0kW
280L 2,028 576 182 478 588 196 875 213 263 20.0kW
300L 2,150 576 182 450 560 196 847 213 263 20.0kW
400L 1,522 756 220 350 460 235 657 250 250 27.0kW
500L 1,896 756 220 385 495 235 891 250 250 27.0kW
The table above shows the standard EXCELSIOR WXI range from 80 to 500 litres. Shared cylinder dimensions are listed alongside direct and indirect model details. Note: O is the outlet position. * Outlet is positioned on top of the vessel for 80L and 100L models.
Size Hi-FLO Indirect Model with 28mm Stainless Steel Inlet & Outlet
H D I O T IH1 CR1 CF1 Coil Rating
255L 1,884 576 182 440 550 196 213 263 20.0kW
280L 2,028 576 182 478 588 196 213 263 20.0kW
300L 2,150 576 182 450 560 196 213 263 20.0kW
400L 1,522 756 220 350 460 235 250 250 27.0kW
500L 1,896 756 220 385 495 235 250 250 27.0kW
The table below shows the EXCELSIOR WXI Hi-FLO range, available as indirect models with 28mm diameter stainless steel inlet and outlet connections.

Why Choose EXCELSIOR WXI?

EXCELSIOR WXI is designed for installations where cylinder space, system reliability and long-term maintenance all matter. Without a separate external expansion vessel, installers can achieve a cleaner setup with fewer components around the cylinder.

The patented Venturi device is built into the system and contains no moving parts. This supports long-term reliability while reducing the maintenance usually associated with external expansion vessels and recharge requirements.

For larger or higher-demand installations, the WXI Hi-FLO option provides 28mm stainless steel inlet and outlet connections. This makes the range suitable for both standard hot water requirements and applications where higher flow capacity is needed.

WXI water heating cylinder installed for testing

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CONTACT US
If you’re looking to reduce operating costs, improve hygiene, and enhance sustainability, reaching out to Fabdec Group is a smart strategic move. Based in Ellesmere, Shropshire—and with an additional European office in Gelsenkirchen, Germany—Fabdec is recognised as a pioneer in stainless-steel thermal solutions, backed by over 60 years of engineering excellence. We design, manufacture and supply an extensive portfolio including energy-efficient milk cooling systems, stainless-steel unvented water heaters, heat recovery units, process vessels, and integrated skid-set systems tailored to dairy, food processing, renewables and HVAC applications. Whether your needs involve bespoke stainless-steel vessels for process engineering, dairy systems to optimise milk handling, or heat recovery solutions to reduce energy consumption, contacting Fabdec via their website or live chat ensures you’re speaking directly with a responsive, customer-focused team committed to high quality and innovation.

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