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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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    Zip AQ3 Pressure Reducer & Line Strainer

    Zip Pressure Reducer & Line Strainer

    ZPAQ3
    Zip Combined Pressure Reducer Valve and Line Strainer - AQ3
    Status: In Stock
    Zip AQ1 Pressure & Temperature Relief Valve

    Zip Pressure & Temperature Relief Valve

    ZPAQ1
    Zip Pressure and Temperature Relief Valve (7 bar) - AQ1

    Compatible with 5, 10 and 15L Zip Aquapoint and Varipoint water heaters
    Status: In Stock
    Zip AQ2  Expansion Vessel & Check Valve

    Zip Expansion Vessel & Check Valve

    ZPAQ2
    Zip 2 Litre Expansion Vessel & Check Valve (3.5bar) Unvented Installation Kit – AQ2

    Compatible with 5, 10 and 15L Zip Aquapoint and Varipoint water heaters
    Status: In Stock
    Picture of Heatrae Sadia Pack U2 Expansion Vessel,PRV & NRV

    Heatrae Sadia Pack U2 Expansion Vessel,PRV & NRV

    95970351
    Heatrae Sadia Pack U2 Expansion Vessel, PRV & NRV
    Status: In Stock
    Picture of Heatrae Sadia Pack U1 Pressure Reducing Valve & Strainer

    Heatrae Sadia Pack U1 Pressure Reducing Valve & Strainer

    95970352
    Heatrae Sadia Pack U1 Pressure Reducing Valve & Strainer
    Status: In Stock
    Picture of Altecnic Reflex 8ltr Vessel for Heating System

    Altecnic Reflex 8ltr Vessel for Heating System

    ALTHV8C
    Altecnic Reflex 8 Litre Expansion Heating Vessel - 4 Bar Max Working Pressure - Max Operating Temperature: 70°C
    Status: In Stock
    Picture of Altecnic Reflex 8ltr Vert Vessel WRAS

    Altecnic Reflex 8ltr Vert Vessel WRAS

    ALTPV8W
    Altecnic Reflex 8 Litre Vertical Potable Expansion Heating Vessel - 10 Bar Max Working Pressure - Max Operating Temperature 70˚C - WRAS Approved
    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 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 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 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 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 Altecnic Reflex 35ltr Vessel c/w Legs Htg System

    Altecnic Reflex 35ltr Vessel c/w Legs Htg System

    ALTHV35C
    Altecnic Reflex 35 Litre Expansion Heating Vessel comes with Legs - 3 Bar Max Working Pressure
    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 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 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 Altecnic Reflex 25ltr Vessel for Heating System

    Altecnic Reflex 25ltr Vessel for Heating System

    ALTHV25C
    Altecnic Reflex 25 litre Expansion Heating Vessel - 4 Bar Max Working Pressure - Max Operating Temperature: 70°C
    Status: In Stock
    Picture of Altecnic Reflex 25ltr Vert Vessel WRAS

    Altecnic Reflex 25ltr Vert Vessel WRAS

    ALTPV25W
    Altecnic Reflex 25 Litre Vertical Potable Expansion Heating Vessel - 10 Bar Max Working Pressure - Max Operating Temperature 70˚C - 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 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 18ltr Vessel for Heating System

    Altecnic Reflex 18ltr Vessel for Heating System

    ALTHV18C
    Altecnic Reflex 18 Litre Expansion Heating Vessel - 4 Bar Max Working Pressure - Max Operating Temperature: 70°C
    Status: In Stock
    Picture of Altecnic Reflex 18ltr Vert Vessel WRAS

    Altecnic Reflex 18ltr Vert Vessel WRAS

    ALTPV18W
    Altecnic Reflex 18 Litre Vertical Potable Expansion Heating Vessel - 10 Bar Max Working Pressure - Max Operating Temperature 70˚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 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 12Ltr Vessel For Heating System c/w Bracket

    Altecnic Reflex 12Ltr Vessel For Heating System c/w Bracket

    ALTHVB12C
    Altecnic Reflex 12 Litre Expansion Heating Vessel comes with Bracket - 4 Bar Max Working Pressure - Max Operating Temperature: 70°C
    Status: In Stock
    Picture of Altecnic Reflex 12ltr Vessel for Heating System

    Altecnic Reflex 12ltr Vessel for Heating System

    ALTHV12C
    Altecnic Reflex 12 Litre Expansion Heating Vessel - 4 Bar Max Working Pressure - Max Operating Temperature: 70°C
    Status: In Stock
    Picture of Altecnic Reflex 12ltr Vert Vessel WRAS

    Altecnic Reflex 12ltr Vert Vessel WRAS

    ALTPV12W
    Altecnic Reflex 12 Litre Vertical Potable Expansion Heating Vessel - 10 Bar Max Working Pressure - Max Operating Temperature 70˚C - WRAS Approved
    Status: In Stock
    Picture of Altecnic Reflex 10ltr Flat Round Heating Vessel

    Altecnic Reflex 10ltr Flat Round Heating Vessel

    ALTHV10F
    Altecnic Reflex 10 Litre Compact Round Flat Expansion Heating Vessel - 3 Bar Max Working Pressure
    Status: Out of 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 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 Advantay Standard Combi Filling Loop c/w IV

    Advantay Standard Combi Filling Loop c/w IV

    AD0090200500
    Advantay 15mm Standard Filling Loop. Complete with ball valve, flexible hose, double check valve .
    Status: Out of Stock
    Picture of Advantay Part L Compliant Filling Loop (Complete)

    Advantay Part L Compliant Filling Loop (Complete)

    AD0090200500PC
    Advantay 15mm Part L Compliant Standard Filling Loop. Complete with ball valve, flexible hose, double check valve with integral ball valve & end caps.
    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
    Picture of Advantay ERCE 35 Heating Vessel (Integral Bracket)

    Advantay ERCE 35 Heating Vessel (Integral Bracket)

    AD0093000035
    Advantay ER series 35 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 390mm – 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 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 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 Advantay ER-24 CE Heating Vessel (Red)

    Advantay ER-24 CE Heating Vessel (Red)

    AD0093000024
    Advantay ER series 24 Litre Heating Expansion Vessel. 3/4” Male Connection. Max Operating Pressure 8 bar (pre-set 1.5 bar), Max Operating Temp 99°C, Height 355mm, Wall mounting (with suitable bracket) - Red
    Status: Out of Stock
    Picture of Advantay ER-18 Heating Vessel (Red)

    Advantay ER-18 Heating Vessel (Red)

    AD0093000018
    Advantay ER series 18 Litre Heating Expansion Vessel. 3/4” Male Connection. Max Operating Pressure 8 bar (pre-set 1.5 bar), Max Operating Temp 99°C, Height 410mm, Wall mounting (with suitable bracket) - Red
    Status: Out of Stock
    Picture of Advantay D-5 Potable Vessel

    Advantay D-5 Potable Vessel

    AD0093100005
    Advantay D series 5 Litre Potable Heating Expansion Vessel. 3/4” Male Connection. Max Operating Pressure 10 bar (pre-set 3 bar), Max Operating Temp 99°C, Height 225mm, Wall mounting (with suitable bracket) - White
    Status: Out of Stock