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Expansion (39 products)
BES stock the correctly sized expansion vessels to meet your needs. Ready for next day delivery are 8, 12, 18, 24, 35 and 50 litre capacity vessels. All kitemarked to BS 4814. We also stock safety relief valves, mounting brackets, filling loops and sealed system filling kits. Read more Show less
Straight Filling Loop with Valve - 15mm
Part number: 15583
Metal braid filling loop comprising a DZR double check valve connected to e...
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Bulk Savings
Save when you order 25 or more
Ex. VAT
£6.41
Inc. VAT
£7.69
Remote Filling Loop with Gauge - 15 mm Compression
Part number: 22993
A remote filling loop for use in a sealed heating system which allows the e...
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New Product
Just arrived. Latest version, etc.
Ex. VAT
£12.10
Save £1.35 (10%)
Inc. VAT
£14.52
Save £1.62 (10%)
Expansion Vessel & Filling Kits 18 Litre Robokit
Part number: 20245
Sealed systems are the most commonly used form of central heating in Europe.
Ex. VAT
£37.98
Inc. VAT
£45.58
Mini Expansion Vessel Shock Arrester
Part number: 11355
Mini expansion vessel is a maintenance free device to accommodate small inc...
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Bulk Savings
Save when you order 10 or more
Ex. VAT
£15.30
Inc. VAT
£18.36
Expansion Vessel 24 Litre ROBO Kit
Part number: 20246
Sealed systems are the most commonly used form of central heating in Europe.
Ex. VAT
£47.12
Inc. VAT
£56.54
Cordless Expansion Pressure Vessel Inflator
Part number: 22757
Vessel Jet is a hand held cordless high pressure air compressor with illumi...
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New Product
Just arrived. Latest version, etc.
Ex. VAT
£52.49
Save £11.26 (17%)
Inc. VAT
£62.99
Save £13.51 (17%)
Expansion Vessel 12 Litre Robo Kit
Part number: 20244
Sealed systems are the most commonly used form of central heating in Europe.
Ex. VAT
£39.99
Inc. VAT
£47.99
Expansion Vessel Central Heating - 50 Litres
Part number: 11638
Sealed system central heating expansion vessel.
Ex. VAT
£58.14
Inc. VAT
£69.77
Straight Filling Loop with Valve - 15mm
Part number: 8148
15 mm compression, brass stop valve, metal braided flexible hose and DZR do...
Ex. VAT
£3.95
Save £1.04 (20%)
Inc. VAT
£4.74
Save £1.25 (20%)
18 Litres/4 Gallons Rectangular Cold Water Storage Tank
Part number: 17416
Water storage tank, for feed and expansion.Size : H 365 mm (14") x L 455 mm...
Ex. VAT
£4.59
Inc. VAT
£5.51
Expansion Vessel Central Heating - 35 Litres
Part number: 11637
Sealed system central heating expansion vessel.
Ex. VAT
£35.99
Inc. VAT
£43.19
Expansion Vessel Central Heating - 12 Litres
Part number: 11351
Sealed system central heating expansion vessel.
Ex. VAT
£16.83
Inc. VAT
£20.20
Expansion Vessel Central Heating - 18 Litres
Part number: 11352
Sealed system central heating expansion vessel.
Ex. VAT
£21.42
Inc. VAT
£25.70
Expansion Vessel Central Heating - 24 Litres
Part number: 11636
Sealed system central heating expansion vessel.
Ex. VAT
£25.38
Inc. VAT
£30.46
15 mm x 22 mm Compression
Part number: 20924
Corrosion resistant, acetal co-polymer straight through tundish provides Ty...
Ex. VAT
£3.53
Inc. VAT
£4.24
Expansion Vessel 8 Litre ROBO Filling Kit
Part number: 20243
Sealed systems are the most commonly used form of central heating in Europe.
Ex. VAT
£37.73
Inc. VAT
£45.28
Expansion Vessel Central Heating - 80 Litres
Part number: 22828
Free standing vessel with ¾" BSP TM side connection.Max.
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New Product
Just arrived. Latest version, etc.
Ex. VAT
£75.78
Inc. VAT
£90.94
Expansion Vessel Central Heating - 8 Litres
Part number: 11350
Sealed system central heating expansion vessel.
Ex. VAT
£16.56
Inc. VAT
£19.87
Hand Pump - 3 m Hose
Part number: 22203
Hayes heavy duty pressure vessel hand pump with 0 to 5 bar gauge, footplate...
Ex. VAT
£26.29
Inc. VAT
£31.55
Sealed System Filling Kit
Part number: 11354
Robokit sealed system filling kit. Contains all the essential components re...
Ex. VAT
£25.33
Inc. VAT
£30.40
114 Litres/25 Gallons Rectangular Cold Water Storage Tank
Part number: 17464
Water storage tank, for feed and expansion.Size : H 533 mm (21") x L 736 mm...
Ex. VAT
£34.93
Inc. VAT
£41.92
Expansion Vessel Central Heating - 105 Litres
Part number: 22829
Free standing vessel with ¾" BSP TM side connection.Max.
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New Product
Just arrived. Latest version, etc.
Ex. VAT
£104.34
Inc. VAT
£125.21
Rectangular Cold Water Storage Tank - 114 Litres (25 Galls) - WRAS Approved
Part number: 18671
Plastic cold water storage tanks for feed and expansion, manufactured to BS...
Ex. VAT
£67.85
Inc. VAT
£81.42
Expansion Vessel Mounting Bracket
Part number: 11353
Suitable for expansion vessels up to 25 litres.
Ex. VAT
£3.15
Inc. VAT
£3.78
22 mm x 1" BSP F
Part number: 22086
Corrosion resistant, acetal co-polymer straight through tundish.
Ex. VAT
£7.73
Inc. VAT
£9.28
Adjustable Hydrostat
Part number: 20976
The pipe mounted hydrostat (water pressure switch) protects sealed heating ...
Ex. VAT
£57.02
Inc. VAT
£68.42
Ex. VAT
£5.25
Inc. VAT
£6.30
Ex. VAT
£9.81
Inc. VAT
£11.77
Straight Filling Loop with Tee - 15mm
Part number: 8165
15 mm compression, brass tee stop valve, metal braided flexible hose and DZ...
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Bulk Savings
Save when you order 25 or more
Ex. VAT
£6.17
Inc. VAT
£7.40
Tank Lid for 114 Litre/25 Gallon Rectangular Tank
Part number: 17465
Lid for water storage tank, for feed and expansion....
Ex. VAT
£16.81
Inc. VAT
£20.17
