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    Expansion Vessels & Ancillaries

    Expansion vessels, also known as expansion tanks, can be found in most domestic pressurised heating systems. If you have a combi boiler, you will have an expansion vessel. This vessel contains air and water from the central heating system, and its purpose is to maintain the right level of pressure in the system.

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    Picture of Altecnic Reflex 600ltr Vessel c/w Legs Htg System

    Altecnic Reflex 600ltr Vessel c/w Legs Htg System

    ALTHV600W
    Altecnic Reflex 600 Litre Vertical Potable Expansion Heating Vessel comes with Legs - 6 Bar Max Working Pressure - Replaceable Membrane - WRAS Approved
    Status: Out of Stock
    Picture of Altecnic Reflex 500ltr Vessel c/w Legs Htg System

    Altecnic Reflex 500ltr Vessel c/w Legs Htg System

    ALTHV500W
    Altecnic Reflex 500 Litre Vertical Potable Expansion Heating Vessel comes with Legs - 6 Bar Max Working Pressure - Replaceable Membrane - WRAS Approved
    Status: Out of Stock
    Picture of 1000L CORE Potable Expansion Vessel

    1000L CORE Potable Expansion Vessel

    CPV1000L
    CORE Potable Expansion Vessel 1000 Litre. 10 bar Maximum Working Pressure. Working Temperature -10 - 100 °C. WRAS approved.
    Status: In Stock
    Picture of Advantay ERCE 250 Heating Vessel (Floor Standing)

    Advantay ERCE 250 Heating Vessel (Floor Standing)

    AD0093000250
    Advantay ER series 250 Litre Free Standing Heating Expansion Vessel. 1” Male Connection. Max Operating Pressure 10 bar (pre-set 1.5 bar), Max Operating Temp 99°C, Height 1160mm – Red
    Status: Out of Stock
    Picture of Advantay ERCE 300 Heating Vessel (Floor Standing)

    Advantay ERCE 300 Heating Vessel (Floor Standing)

    AD0093000300
    Advantay ER series 300 Litre Free Standing Heating Expansion Vessel. 1” Male Connection. Max Operating Pressure 10 bar (pre-set 1.5 bar), Max Operating Temp 99°C, Height 1240mm – Red
    Status: In Stock
    Picture of Altecnic Reflex 300ltr Vert Vessel WRAS c/w Legs

    Altecnic Reflex 300ltr Vert Vessel WRAS c/w Legs

    ALTPV300W
    Altecnic Reflex 300 Litre Vertical Potable Expansion Heating Vessel comes with Legs - 10 Bar Max Working Pressure - Replaceable Membrane - WRAS Approved
    Status: Out of Stock
    Picture of 750L CORE Potable Expansion Vessel

    750L CORE Potable Expansion Vessel

    CPV750L
    CORE Potable Expansion Vessel 750 Litre. 10 bar Maximum Working Pressure. Working Temperature -10 - 100 °C. WRAS approved.
    Status: In Stock
    Picture of Advantay AFH-200 CE horz 10bar Expansion Vessel

    Advantay AFH-200 CE horz 10bar Expansion Vessel

    AD0093500200
    Advantay 200 Litre Horizontal Expansion Vessel complete with universal pump mounting bracket. 1.1/4” Male Connection. Max Operating Pressure 10 bar (pre-set 1.5 bar), Max Operating Temp 99°C, Height 665mm - Blue
    Status: Out of Stock
    Picture of Altecnic Reflex 300ltr Vessel c/w Legs Htg System

    Altecnic Reflex 300ltr Vessel c/w Legs Htg System

    ALTHV300W
    Altecnic Reflex 300 Litre Expansion Heating Vessel comes with Legs - 6 Bar Max Working Pressure
    Status: Out of Stock
    Picture of Altecnic Reflex 200ltr Vert Vessel WRAS c/w Legs

    Altecnic Reflex 200ltr Vert Vessel WRAS c/w Legs

    ALTPV200W
    Altecnic Reflex 200 Litre Vertical Potable Expansion Heating Vessel comes with Legs - 10 Bar Max Working Pressure - Replaceable Membrane - WRAS Approved
    Status: In Stock
    Picture of Altecnic Reflex 140ltr Vert Vessel WRAS c/w Legs

    Altecnic Reflex 140ltr Vert Vessel WRAS c/w Legs

    ALTPV140W
    Altecnic Reflex 140 Litre Vertical Potable Expansion Heating Vessel comes with Legs - 10 Bar Max Working Pressure - Fixed Membrane - WRAS Approved
    Status: In Stock
    Picture of Altecnic Reflex 200ltr Vessel c/w Legs Htg System

    Altecnic Reflex 200ltr Vessel c/w Legs Htg System

    ALTHV200W
    Altecnic Reflex 200 Litre Expansion Heating Vessel comes with Legs - 6 Bar Max Working Pressure
    Status: In Stock
    Picture of Altecnic Reflex 100ltr Vert Vessel WRAS c/w Legs

    Altecnic Reflex 100ltr Vert Vessel WRAS c/w Legs

    ALTPV100W
    Altecnic Reflex 100 Litre Vertical Potable Expansion Heating Vessel comes with Legs - 10 Bar Max Working Pressure - Replaceable Membrane - WRAS Approved
    Status: Out of Stock
    Picture of 500L CORE Potable Expansion Vessel

    500L CORE Potable Expansion Vessel

    CPV500L
    CORE Potable Expansion Vessel 500 Litre. 10 bar Maximum Working Pressure. Working Temperature -10 - 100 °C. WRAS approved.
    Status: In Stock
    Picture of Altecnic Reflex 140ltr Vessel c/w Legs Htg System

    Altecnic Reflex 140ltr Vessel c/w Legs Htg System

    ALTHV140C
    Altecnic Reflex 140 Litre Expansion Heating Vessel comes with Legs - 6 Bar Max Working Pressure
    Status: In Stock
    Picture of 1000L CORE Heating Expansion Vessel

    1000L CORE Heating Expansion Vessel

    CHV1000L
    CORE Heating Expansion Vessel 1000 Litre. 6 bar Maximum Working Pressure. Working Temperature -10 - 70°C. (with legs)
    Status: Out of Stock
    Picture of 800L CORE Heating Expansion Vessel

    800L CORE Heating Expansion Vessel

    CHV800L
    CORE Heating Expansion Vessel 800 Litre. 6 bar Maximum Working Pressure. Working Temperature -10 - 70°C. (with legs)
    Status: In Stock
    Picture of 2" Advantay Pressure Reducing Valve Female Union

    2" Advantay Pressure Reducing Valve Female Union

    AD0901600200
    2" Advantay Pressure Reducing Valve BSP, F/F union fittings. Adjustable between 0.5 to 6 bar. Pre set 3 bar maximum inlet pressure of 25 bar. Maximum water temperature of 80°c. Suitable for fluid, water and compressed air.
    Status: In Stock
    Picture of Altecnic Reflex 100ltr Vessel c/w Legs Htg System

    Altecnic Reflex 100ltr Vessel c/w Legs Htg System

    ALTHV100C
    Altecnic Reflex 100 Litre Expansion Heating Vessel comes with Legs - 6 Bar Max Working Pressure
    Status: In Stock
    Picture of 600L CORE Heating Expansion Vessel

    600L CORE Heating Expansion Vessel

    CHV600L
    CORE Heating Expansion Vessel 600 Litre. 6 bar Maximum Working Pressure. Working Temperature -10 - 70°C. (with legs)
    Status: In Stock
    Picture of 300L CORE Potable Expansion Vessel

    300L CORE Potable Expansion Vessel

    CPV300L
    CORE Potable Expansion Vessel 300 Litre. 10 bar Maximum Working Pressure. Working Temperature -10 - 100 °C. WRAS approved.
    Status: In Stock
    Picture of 500L CORE Heating Expansion Vessel

    500L CORE Heating Expansion Vessel

    CHV500L
    CORE Heating Expansion Vessel 500 Litre. 6 bar Maximum Working Pressure. Working Temperature -10 - 70°C. (with legs)
    Status: In Stock
    Picture of 1-1/4" Advantay Pressure Reducing Valve Female Union

    1-1/4" Advantay Pressure Reducing Valve Female Union

    AD0901600114
    1-1/4" Advantay Pressure Reducing Valve BSP, F/F union fittings. Adjustable between 0.5 to 6 bar. Pre set 3 bar maximum inlet pressure of 25 bar. Maximum water temperature of 80°c. Suitable for fluid, water and compressed air.
    Status: Out of Stock
    Picture of 1-1/2" Advantay Pressure Reducing Valve Female Union

    1-1/2" Advantay Pressure Reducing Valve Female Union

    AD0901600112
    1-1/2" Advantay Pressure Reducing Valve BSP, F/F union fittings. Adjustable between 0.5 to 6 bar. Pre set 3 bar maximum inlet pressure of 25 bar. Maximum water temperature of 80°c. Suitable for fluid, water and compressed air.
    Status: In Stock
    Picture of 400L CORE Heating Expansion Vessel

    400L CORE Heating Expansion Vessel

    CHV400L
    CORE Heating Expansion Vessel 400 Litre. 6 bar Maximum Working Pressure. Working Temperature -10 - 70°C. (with legs)
    Status: In Stock
    Picture of Altecnic Reflex 80ltr Vessel c/w Legs Htg System

    Altecnic Reflex 80ltr Vessel c/w Legs Htg System

    ALTHV80C
    Altecnic Reflex 80 Litre Expansion Heating Vessel comes with Legs - 6 Bar Max Working Pressure
    Status: In Stock
    Picture of Advantay ERCE 100 Heating Vessel (Floor Standing)

    Advantay ERCE 100 Heating Vessel (Floor Standing)

    AD0093000100
    Advantay ER series 100 Litre Free Standing Heating Expansion Vessel. 3/4” Male Connection. Max Operating Pressure 10 bar (pre-set 1.5 bar), Max Operating Temp 99°C, Height 775mm – Red
    Status: Out of Stock
    Picture of Altecnic Reflex 50ltr Vert Vessel WRAS c/w Legs

    Altecnic Reflex 50ltr Vert Vessel WRAS c/w Legs

    ALTPV50W
    Altecnic Reflex 50 Litre Vertical Potable Expansion Heating Vessel comes with Legs - 10 Bar Max Working Pressure - Replaceable Membrane - WRAS Approved
    Status: In Stock
    Picture of 300L CORE Heating Expansion Vessel

    300L CORE Heating Expansion Vessel

    CHV300L
    CORE Heating Expansion Vessel 300 Litre. 6 bar Maximum Working Pressure. Working Temperature -10 - 70°C. (with legs)
    Status: In Stock
    Picture of 200L CORE Potable Expansion Vessel

    200L CORE Potable Expansion Vessel

    CPV200L
    CORE Potable Expansion Vessel 200 Litre. 10 bar Maximum Working Pressure. Working Temperature -10 - 100 °C. WRAS approved.
    Status: In Stock
    Picture of 150L CORE Potable Expansion Vessel

    150L CORE Potable Expansion Vessel

    CPV150L
    CORE Potable Expansion Vessel 150 Litre. 10 bar Maximum Working Pressure. Working Temperature -10 - 100 °C. WRAS approved.
    Status: In Stock
    Picture of Altecnic Reflex 33ltr Vert Vessel WRAS c/w Brkt

    Altecnic Reflex 33ltr Vert Vessel WRAS c/w Brkt

    ALTPV33W
    Altecnic Reflex 33 Litre Vertical Potable Expansion Heating Vessel comes with bracket - 10 Bar Max Working Pressure - Max Operating Temperature 70˚C - Fixed Membrane - WRAS Approved
    Status: In Stock
    Picture of 15nb Winns Type C Auto Air Vent

    15nb Winns Type C Auto Air Vent

    WINC
    15nb Winns Brass Type C Automatic Air Vent Eliminator
    Status: Out of Stock
    Picture of 200L CORE Heating Expansion Vessel

    200L CORE Heating Expansion Vessel

    CHV200L
    CORE Heating Expansion Vessel 200 Litre. 6 bar Maximum Working Pressure. Working Temperature -10 - 70°C. (with legs)
    Status: In Stock
    Picture of Altecnic Reflex 50ltr Vessel c/w Legs Htg System

    Altecnic Reflex 50ltr Vessel c/w Legs Htg System

    ALTHV50C
    Altecnic Reflex 50 Litre Expansion Heating Vessel comes with Legs - 6 Bar Max Working Pressure
    Status: In Stock
    Picture of 15nb Winns Type B Auto Air Vent

    15nb Winns Type B Auto Air Vent

    WINB
    15nb Winns Brass Type B Automatic Air Vent Eliminator
    Status: In Stock
    Picture of 100L CORE Potable Expansion Vessel

    100L CORE Potable Expansion Vessel

    CPV100L
    CORE Potable Expansion Vessel 100 Litre. 10 bar Maximum Working Pressure. Working Temperature -10 - 100 °C. WRAS approved.
    Status: In Stock
    Picture of Advantay D-35 CE Potable Vessel

    Advantay D-35 CE Potable Vessel

    AD0093100035
    Advantay D series 35 Litre Potable Heating Expansion Vessel. 1” Male Connection. Max Operating Pressure 10 bar (pre-set 3 bar), Max Operating Temp 99°C, Height 390mm, Wall mounting (with suitable bracket) - White
    Status: Out of Stock
    Picture of 150L CORE Heating Expansion Vessel

    150L CORE Heating Expansion Vessel

    CHV150L
    CORE Heating Expansion Vessel 150 Litre. 6 bar Maximum Working Pressure. Working Temperature -10 - 70°C. (with legs)
    Status: In Stock
    Picture of Advantay ERCE 50 Heating Vessel (Integral Bracket)

    Advantay ERCE 50 Heating Vessel (Integral Bracket)

    AD0093000050
    Advantay ER series 50 Litre Heating Expansion Vessel with Integrated Bracket. 3/4” Male Connection. Max Operating Pressure 10 bar (pre-set 1.5 bar), Max Operating Temp 99°C, Height 500mm – Red
    Status: Out of Stock
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