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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

  • 1 of 2

Straight Filling Loop with Valve - 15mm

Part number: 15583

Metal braid filling loop comprising a DZR double check valve connected to e...

  • 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...

  • 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...

  • 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...

  • 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.

  • 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.

  • 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

Byelaw 30 Kit Complete

Part number: 11454

Byelaw 30 kit complete (England and Wales).

Ex. VAT

£5.25

Inc. VAT

£6.30

Pressure Vessel Service Kit

Part number: 22206

Pressure vessel service kit

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...

  • 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

Showing 30 out of 39 products

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