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    Expansion
    Expansion

    Expansion

    BES stock the correctly sized expansion vessels to meet your needs. Including our new range of robokit compact vessels for when space is tight. Both types are 8, 12, 18 litre capacity vessels with the standard range having 24, 35, 50, 80, 105, litre capacity. All kitemarked to BS 4814. We also stock safety relief valves, mounting brackets, filling loops and sealed system filling kits.

    Items 1-30 of 49

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    Straight Tundish Open - 15mm x 22mm Compression Straight Tundish Open - 15mm x 22mm Compression Straight Tundish Open - 15mm x 22mm Compression
    Straight Tundish Open - 15mm x 22mm Compression Part Number: 20924
    £5.75 £4.79
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    Expansion Vessel Central Heating - 18 Litres Expansion Vessel Central Heating - 18 Litres Expansion Vessel Central Heating - 18 Litres
    Expansion Vessel Central Heating - 18 Litres Part Number: 11352
    £32.47 £27.06
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    Expansion Vessel Central Heating - 105 Litres Expansion Vessel Central Heating - 105 Litres Expansion Vessel Central Heating - 105 Litres
    Expansion Vessel Central Heating - 105 Litres Part Number: 22829
    £174.53 £145.44
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    Expansion Vessel Central Heating - 24 Litres Expansion Vessel Central Heating - 24 Litres Expansion Vessel Central Heating - 24 Litres
    Expansion Vessel Central Heating - 24 Litres Part Number: 11636
    £38.82 £32.35
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    Robokit Compact Vessel & Filling Kit - 18 Litres Robokit Compact Vessel & Filling Kit - 18 Litres Robokit Compact Vessel & Filling Kit - 18 Litres
    Robokit Compact Vessel & Filling Kit - 18 Litres Part Number: 23631
    £94.96 £79.13
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    Dry Trap Tundish - 15mm x 32mm Compression Dry Trap Tundish - 15mm x 32mm Compression Dry Trap Tundish - 15mm x 32mm Compression
    Dry Trap Tundish - 15mm x 32mm Compression Part Number: 23731
    £27.00 £22.50
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    Angle Aluminium Tundish - 1/2" with 3/4" Outlet Angle Aluminium Tundish - 1/2" with 3/4" Outlet Angle Aluminium Tundish - 1/2" with 3/4" Outlet
    Angle Aluminium Tundish - 1/2" with 3/4" Outlet Part Number: 12165
    £17.66 £14.72
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    Rectangular Cold Water Storage Tank 114L - 25 Galls Rectangular Cold Water Storage Tank 114L - 25 Galls Rectangular Cold Water Storage Tank 114L - 25 Galls
    Rectangular Cold Water Storage Tank 114L - 25 Galls Part Number: 17464
    £51.35 £42.79
    Out of stock
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    Tank Lid for 114 Litre/25 Gallon Rectangular Tank Tank Lid for 114 Litre/25 Gallon Rectangular Tank Tank Lid for 114 Litre/25 Gallon Rectangular Tank
    Tank Lid for 114 Litre/25 Gallon Rectangular Tank Part Number: 17465
    £24.71 £20.59
    Out of stock
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    Sealed System Filling Kit for Expansion Vessels Sealed System Filling Kit for Expansion Vessels Sealed System Filling Kit for Expansion Vessels
    Sealed System Filling Kit for Expansion Vessels Part Number: 11354
    £39.59 £32.99
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    Hayes Pressure Vessel Hand Pump & Free Angled Adaptor Hayes Pressure Vessel Hand Pump & Free Angled Adaptor Hayes Pressure Vessel Hand Pump & Free Angled Adaptor
    Hayes Pressure Vessel Hand Pump & Free Angled Adaptor Part Number: 22315
    £35.99 £29.99
    Out of stock
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    Dry Trap Tundish - 15 x 22mm Compression Dry Trap Tundish - 15 x 22mm Compression Dry Trap Tundish - 15 x 22mm Compression
    Dry Trap Tundish - 15 x 22mm Compression Part Number: 23478
    £20.52 £17.10
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    Expansion Vessel Central Heating - 12 Litres Expansion Vessel Central Heating - 12 Litres Expansion Vessel Central Heating - 12 Litres
    Expansion Vessel Central Heating - 12 Litres Part Number: 11351
    £25.75 £21.46
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    Expansion Vessel - 8 Litres Expansion Vessel - 8 Litres Expansion Vessel - 8 Litres
    Expansion Vessel - 8 Litres Part Number: 20243
    £60.35 £50.29
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    Expansion Vessel Central Heating - 8 Litres Expansion Vessel Central Heating - 8 Litres Expansion Vessel Central Heating - 8 Litres
    Expansion Vessel Central Heating - 8 Litres Part Number: 11350
    £25.33 £21.11
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    Inta Safe-Group Vessel Fixing Kit Inta Safe-Group Vessel Fixing Kit Inta Safe-Group Vessel Fixing Kit
    Inta Safe-Group Vessel Fixing Kit Part Number: 24052
    £53.72 £44.77
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    Arctic Hayes Pressure Vessel Hand Pump - 3m Hose Arctic Hayes Pressure Vessel Hand Pump - 3m Hose Arctic Hayes Pressure Vessel Hand Pump - 3m Hose
    Arctic Hayes Pressure Vessel Hand Pump - 3m Hose Part Number: 22203
    £41.69 £34.74
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    Expansion Vessel Mounting Bracket Expansion Vessel Mounting Bracket Expansion Vessel Mounting Bracket
    Expansion Vessel Mounting Bracket Part Number: 11353
    £5.18 £4.32
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    Remote Filling Loop with Gauge - 15mm Compression Remote Filling Loop with Gauge - 15mm Compression Remote Filling Loop with Gauge - 15mm Compression
    Remote Filling Loop with Gauge - 15mm Compression Part Number: 22993
    £13.02 £10.85 As low as £11.72
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    Mini Expansion Vessel Shock Arrestor - 1/2" BSP TM Mini Expansion Vessel Shock Arrestor - 1/2" BSP TM Mini Expansion Vessel Shock Arrestor - 1/2" BSP TM
    Mini Expansion Vessel Shock Arrestor - 1/2" BSP TM Part Number: 11355
    Was £19.20 £16.00 Now £15.59 £12.99

    Save £3.61 £3.01 (18%)

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    Straight Tundish Open - 22mm x 1" BSP F Straight Tundish Open - 22mm x 1" BSP F Straight Tundish Open - 22mm x 1" BSP F
    Straight Tundish Open - 22mm x 1" BSP F Part Number: 22086
    £13.82 £11.52
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    Inta Safe-Group Vessel Fixing Kit with NRV Inta Safe-Group Vessel Fixing Kit with NRV Inta Safe-Group Vessel Fixing Kit with NRV
    Inta Safe-Group Vessel Fixing Kit with NRV Part Number: 24053
    £62.66 £52.22
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    Straight Filling Loop with Tee - 15mm Straight Filling Loop with Tee - 15mm Straight Filling Loop with Tee - 15mm
    Straight Filling Loop with Tee - 15mm Part Number: 8165
    £8.78 £7.32 As low as £7.03
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    Straight Filling Loop with Two Stop Valves - 15mm Straight Filling Loop with Two Stop Valves - 15mm Straight Filling Loop with Two Stop Valves - 15mm
    Straight Filling Loop with Two Stop Valves - 15mm Part Number: 15583
    £9.13 £7.61 As low as £7.31
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    Robokit Compact Vessel & Filling Kit - 12 Litres Robokit Compact Vessel & Filling Kit - 12 Litres Robokit Compact Vessel & Filling Kit - 12 Litres
    Robokit Compact Vessel & Filling Kit - 12 Litres Part Number: 23630
    £84.14 £70.12
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    Expansion Vessel - 18 Litres Expansion Vessel - 18 Litres Expansion Vessel - 18 Litres
    Expansion Vessel - 18 Litres Part Number: 20245
    £64.24 £53.53
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    Mini Expansion Vessel Shock Arrestor - 15mm Mini Expansion Vessel Shock Arrestor - 15mm Mini Expansion Vessel Shock Arrestor - 15mm
    Mini Expansion Vessel Shock Arrestor - 15mm Part Number: 23632
    £25.26 £21.05 As low as £22.72
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    Expansion Vessel - 12 Litres Expansion Vessel - 12 Litres Expansion Vessel - 12 Litres
    Expansion Vessel - 12 Litres Part Number: 20244
    £63.95 £53.29
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    Robokit Compact Vessel & Filling Kit - 8 Litres Robokit Compact Vessel & Filling Kit - 8 Litres Robokit Compact Vessel & Filling Kit - 8 Litres
    Robokit Compact Vessel & Filling Kit - 8 Litres Part Number: 23629
    £80.94 £67.45
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    Tank Lid for 18 Litre/4 Gallon Rectangular Tank Tank Lid for 18 Litre/4 Gallon Rectangular Tank Tank Lid for 18 Litre/4 Gallon Rectangular Tank
    Tank Lid for 18 Litre/4 Gallon Rectangular Tank Part Number: 17417
    £4.73 £3.94
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    Items 1-30 of 49

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