Water-Heater Expansion Tanks
311 productsUpdated March 2026

ATL
ATL Dry Break Coupling Housing - Car Mounted - BRITCAR
View offers →

Scottoiler
Scottoiler Traveller Expansion Bag
View offers →

Canton
Canton Mini Cooper R53 Alloy Water Header / Expansion Tank
View offers →

Forge
Forge PolarCooler Chargecooler And Expansion Tank Kit
View offers →

Airtec
Airtec Header Tank - Black - Black Cap
View offers →

X-Guard
X-Guard Reservoir Cap Adapter
View offers →

Mishimoto
Mishimoto Aluminium Coolant Expansion Tank - Polished Finish
View offers →

Mishimoto
Mishimoto Aluminum Coolant Expansion Tank, Black
View offers →

Triton
Triton T80Z Fast-fit 9.5kW White/Chrome SP8009ZFF
£163.97
up to £228.00
2 offers

Mira Showers
Mira Advance Flex 9.8kW Thermo Electric Shower W/Flex Fittings 1.1785.004
£449.86
up to £604.00
2 offers

Beto
Beto CJA001S Tubeless Air Tank Inflator
£45.00
2 offers

Pressure Wave
Horizontaal expansievat Pressure Wave 20 liter
£105.89

Hyco
Hyco Speedflow Pressure Reducing Valve And Expansion Vessel Kit
£121.68

Dab
5-way coupling 1"
£25.90

Tallas
Tallas D-JET 850 Garden Pump
£108.95

VAILLANT
Vaillant ecoTEC Pro Combi 24kW Gas Boiler ErP 10021836
£2033.03

Vevor
VEVOR Water Tank Bladder, 541.3 L Large Capacity, PVC Collapsible Water Bladder Including Spigots and Overflow Kit, Portable Water Storage Bladder for Garden Water Catcher, Black
£52.99

Hyco
Hyco Speedflow Expansion Vessel Kit
£78.09

Pressure Wave
Verticaal expansievat Pressure Wave 8 liter
£77.81

4Trade
4Trade 1 1/4in Torbeck Diaphragm Washer (Pack of 2)
£28.35

Dab
Connecting kit for an expansion vessel - 64 cm
£68.95

Pressure Wave
Verticaal expansievat Pressure Wave 2 liter
£88.95

Tallas
Tallas D-BOOST 850 Booster Pump
£139.00

Hepworth
Hepworth Chimney Pot Cannon Head Red 600mm YM14R
View offers →