Expansion Vessels

Expansion Vessels

Stocking a huge selection of expansion vessels to suit a wide variety of boilers, Discounted Heating is the perfect place to stock up on central heating essentials. You’ll also find a comprehensive selection of accessories and expansion vessel pipe kits, useful when you’re repairing or replacing existing heating systems.

Typically used in sealed heating systems, expansion vessels are installed to accommodate the way water expands when it warms up. This is essential for protecting the system from the negative effects of excessive pressure, which is why we source our vessels and valves from reliable manufacturers with great safety credentials.

We stock expansion vessels in a variety of different sizes, all sourced from a selection of the most trusted brands in the business, so you can browse expansion vessels from top names such as Ideal, Vaillant, Worchester Bosch, and Alpha.

With an extensive selection of expansion vessels and valves designed to suit a large number of central heating systems, Discounted Heating is sure to have the right part for the job. We are also constantly working to update and add to our selection, ensuring you can get hold of the plumbing parts you need as and when they hit the market.

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Santon Aquaheat Expansion Kit ALK05

Santon Aquaheat Expansion Kit ALK05 - For Use where expanded water can not be accommodated in the p..

£105.00 inc Vat Ex VAT: £87.50

Heatrae Sadia 95022002 Amptec C600 6 kW HE Electric Flow Boiler with Free Expansion Vessel and Fittings

Amptec electric flow Boilers are sized to efficiently meet a wide range of different needs, and can ..

£464.89 inc Vat Ex VAT: £387.41

Heatrae Sadia 95022003 Amptec C900 9 kW HE Electric Flow Boiler w/expansion vessel & fittings

Amptec electric flow Boilers are sized to efficiently meet a wide range of different needs, and can ..

£643.75 inc Vat Ex VAT: £536.46

Center Heating Expansion Vessel 35 Litre

Features Fixed diaphragm expansion vessels, manufactured in accordance with pressure equipment dire..

£68.62 inc Vat Ex VAT: £57.18

Flamco FC VESS B18 Vesselpak Type-B 18 Litre Out Of Stock

Flamco FC VESS B18 Vesselpak Type-B 18 Litre

Flamco FC VESS B18 Vesselpak Type-B 18LTR When you choose an A-grade brand like Flamco, you expect ..

£108.00 inc Vat Ex VAT: £90.00

Flamco Flexcon FC BAND MB2 Mounting Band (Up to 25 Litres)

Looking for a Expansion Vessels then the Flexcon MB2 Mounting band 25ltr could be for you. It's in s..

£7.67 inc Vat Ex VAT: £6.39

Flexcon 4 litre Expansion Vessel (Only)

Product Details - Capacity: 4 Litre - Height: 194mm - Width: 216mm - Weight: 1.8kg - Max..

£32.36 inc Vat Ex VAT: £26.97

Zip Expansion Vessel and Check Valve

Zip Expansion Vessel and Check Valve ..

£76.79 inc Vat Ex VAT: £63.99

Flamco Flexcon 18 Litre Expansion Vessel (Vessel Only)

Features: Vessel Only Capacity: 18 Litre Height: 306 mm Width: 328 mm Weight: 3.7 kg Max. wo..

£55.47 inc Vat Ex VAT: £46.22

Santon Expansion Kit ALK02

Santon Expansion Kit ALK02 ..

£144.00 inc Vat Ex VAT: £120.00

Heatrae Sadia 95022005 Amptec C1200 12 kW HE Electric Flow Boiler with Expansion Vessel and Fittings

Amptec electric flow Boilers are sized to efficiently meet a wide range of different needs, and can ..

£778.90 inc Vat Ex VAT: £649.08

Ariston Kit A Expansion Vessel and NRV 2 Ltr Out Of Stock

Ariston Kit A Expansion Vessel and NRV 2 Ltr

Ariston Kit A Expansion Vessel and NRV 2 Ltr Features: Expansion vessel and check valve for opti..

£43.20 inc Vat Ex VAT: £36.00

Center heating expansion vessel 12 ltr

Features Fixed diaphragm expansion vessels, manufactured in accordance with pressure equipment direc..

£36.71 inc Vat Ex VAT: £30.59

Center heating expansion vessel 18 ltr

Features Fixed diaphragm expansion vessels, manufactured in accordance with pressure equipment dire..

£39.77 inc Vat Ex VAT: £33.14

Center heating expansion vessel 25 ltr

Features Fixed diaphragm expansion vessels, manufactured in accordance with pressure equipment dire..

£48.66 inc Vat Ex VAT: £40.55