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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 35L CORE Heating Expansion Vessel

    35L CORE Heating Expansion Vessel

    CHV35L
    CORE Heating Expansion Vessel 35 Litre. 6 bar Maximum Working Pressure. Working Temperature -10 - 70°C. (with legs)
    Status: In Stock
    Picture of 15mm Altecnic Remote Filling Loop c/w Gauge

    15mm Altecnic Remote Filling Loop c/w Gauge

    ALTST0035
    Altecnic Remote Filling Loop with Gauge. Max Static Pressure: 10 bar. Max Fluid Temperature: 100°C
    Status: In Stock
    Picture of 1/2" Flamco Flexvent

    1/2" Flamco Flexvent

    FLEX015
    1/2" Flamco Float Operated Flexvent - Minimum/Maximum working pressure 0.2 / 10.0 bar
    Status: In Stock
    Picture of 3/8" Flamco Flexvent

    3/8" Flamco Flexvent

    FLEX010
    3/8" Flamco Float Operated Flexvent - Minimum/Maximum working pressure 0.2 / 10.0 bar -Brass
    Status: In Stock
    Picture of 8L CORE Potable Expansion Vessel

    8L CORE Potable Expansion Vessel

    CPV8L
    CORE Potable Expansion Vessel 8 Litre. 10 bar Maximum Working Pressure. Working Temperature -10 - 100 °C. WRAS approved.
    Status: In 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 110/82mm Airsure Air Admittance Valve

    110/82mm Airsure Air Admittance Valve

    FRG110W
    110/82mm Airsure Air Admittance Valve
    Status: In Stock
    Picture of 25L CORE Heating Expansion Vessel

    25L CORE Heating Expansion Vessel

    CHV25L
    CORE Heating Expansion Vessel 25 Litre. 6 bar Maximum Working Pressure. Working Temperature -10 - 70°C.
    Status: In Stock
    Picture of 15mm CORE Filling Loop (WRAS Approved)

    15mm CORE Filling Loop (WRAS Approved)

    FL015
    15mm CORE Filling Loop with caps and collars (WRAS Approved). Used to fill sealed systems from the mains cold water.
    Status: In Stock
    Picture of 1/2" CORE 508 Auto Air Vent c/w Check Valve (AAV)

    1/2" CORE 508 Auto Air Vent c/w Check Valve (AAV)

    AD0050800012
    1/2" Automatic Air Release Valve with isolating check valve. Max pressure 10 bar, max temperature 110°c.
    Status: In Stock
    Picture of 18L CORE Heating Expansion Vessel

    18L CORE Heating Expansion Vessel

    CHV18L
    CORE Heating Expansion Vessel 18 Litre. 6 bar Maximum Working Pressure. Working Temperature -10 - 70°C.
    Status: In Stock
    Picture of 15mm Ecofil Plus Filling Loop (G24 Approved)

    15mm Ecofil Plus Filling Loop (G24 Approved)

    ALTCA300606
    Ecofil Plus Filling Loop with check valves (G24 Approved). Used to fill sealed systems from the mains cold water. WRAS approved.
    Status: In Stock
    Picture of 1/2" Auto Air Vent ART1360

    1/2" Auto Air Vent ART1360

    ALBAAV015
    Automatic Air Vent. BSP Parallel Male Ends (ISO 228/1). Body Brass CW617N Nickel Plated. 10 Bar Rated. +5°C to +110°C.
    Status: Out of Stock
    Picture of 12L CORE Heating Expansion Vessel

    12L CORE Heating Expansion Vessel

    CHV12L
    CORE Heating Expansion Vessel 12 Litre. 6 bar Maximum Working Pressure. Working Temperature -10 - 70°C.
    Status: In Stock
    Picture of 8L CORE Heating Expansion Vessel

    8L CORE Heating Expansion Vessel

    CHV8L
    CORE Heating Expansion Vessel 8 Litre. 6 bar Maximum Working Pressure. Working Temperature -10 - 70°C.
    Status: In 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 1/2" Automatic Air Vent for Water

    1/2" Automatic Air Vent for Water

    AAV015
    1/2" Automatic Air Vent for Water
    Status: In Stock
    Picture of 3/8" Advantay Auto Air Vent

    3/8" Advantay Auto Air Vent

    AD0050700038
    3/8" Advantay Auto Air Vent. 110°c with max pressure of 10 bar as standard.
    Status: Out of Stock
    Picture of Advantay 5 to 24 Ltr Fixing Bracket, Strap, Plugs and Screws

    Advantay 5 to 24 Ltr Fixing Bracket, Strap, Plugs and Screws

    AD0099000524
    Advantay 5 to 24 Ltr Fixing Bracket, Strap, Plugs and Screws.
    Status: In Stock
    Picture of 1/4" PT90 Test Point

    1/4" PT90 Test Point

    TA52179-009
    1/4" PT90 Brass Pressure Test Point BSP Thread
    Status: In Stock
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