This part is in the boiler to protect the boiler from excessive surges and that the pressure within the boiler operates within safe parameters normally between 1 to 2.5 bar. The expansion vessel is filled half full of air and half full of water. The most common issues customer’s encounter when the expansion vessel is faulty is the boiler pressure builds to 3 bar and hot water starts to drip through the pressure relief valve and outside via the discharge pipe. When the boiler then cools down the pressure in the boiler falls to 0 bar and won’t fire up. The customer then has to fill the boiler back up by using the filling loop normally located below the boiler. Once the pressure in the boiler is back at 1 -1.5bar the boiler will start to work again.

images/products/Ferroli_Expansio_4eb3ee93cf517
Ferroli 39809690 Domocompact 10 Litre Expansion Vessel

Part: 39809690

Price: £95.00
7204
Vokera 7204 Excell Eclipse Expansion Vessel

Part: 7204

Price: £76.50
1830
Vokera 1830 Linea Expansion Vessel

Part: 1830

Price: £72.95
20138101_500x500_500x500
Vokera Expansion vessel 20029826

Part: 20029826

Price: £74.95
20138101_500x5002
Vokera 20138101 Vision Easiheat Expansion Vessel

Part: 20138101

Price: £74.95
images/products/00200207441
Saunier Duval Expansion vessel 0020020744

Part: 0020020744

Price: £79.95
images/products/Vaillant__Expans_51150738764ce
Vaillant 181051 EcoTec Expansion Vessel

Part: 181051

Price: £79.95
00200207441
Glowworm 0020020744 Flexicom Expansion Vessel

Part: 0020020744

Price: £79.95
AK1619
Compatible Logic Independent Expansion Vessel AK1619

Part: AK1619

Price: £55.00
images/products/Alpha__500E_Expa_4fbdface53918
Alpha 6.5634660 500E (7.5 Litre) Expansion Vessel

Part: 6.5634660A

Price: £133.28
images/products/Alpha_Expansion__4ec27b22f3e12
Alpha 1.023560 Expansion Vessel

Part: 1.023560

Price: £82.00
images/products/Alpha_Expansion__5123a02fbc270
Alpha 1.021528 240 280 (8 Litre) Expansion Vessel

Part: 1.021528

Price: £102.33
images/products/Alpha_Expansion__51225baf127f4
Alpha 1.018837 CB50 CD50 DHW Expansion Vessel

Part: 1.018837

Price: £109.92
images/products/1.030996
Alpha 1.030996 Intec 2, Eco 2 Expansion Vessel

Part: 1.030996

Price: £87.26
9266
Vokera 9266 Maxin Expansion Vessel

Part: 9266

Price: £94.00
7620
Vokera 7620 Mynute Expansion Vessel

Part: 7620

Price: £85.95
4492
Vokera 4492 Flowmatic Expansion Vessel

Part: 4492

Price: £87.50
2573
Vokera 2573 Unica, Compact, Pro Combi Expansion Vessel

Part: 2573

Price: £72.95
2204
Vokera 2204 Compact Linea Expansion Vessel

Part: 2204

Price: £69.95
10020840
Vokera 10020840 Mynute Expansion Vessel

Part: 10020840

Price: £94.35
10020839
Vokera 10020839 Mynute Expansion Vessel

Part: 10020839

Price: £117.00
177601
Ideal 177601 Pro Combi Exclusive Expansion Vessel

Part: 177601

Price: £91.00
177540
Ideal 177540 Logic Independent Expansion Vessel

Part: 177540

Price: £87.13
176865
Ideal 176865 Vogue Expansion Vessel

Part: 176865

Price: £85.26
176464
Ideal 176464 Pro Combi Exclusive Expansion Vessel

Part: 176464

Price: £84.32
176001
Ideal 176001 Logic Independent System Expansion Vessel

Part: 176001

Price: £78.10
1755517
Ideal 175551 Logic Independent Expansion Vessel

Part: 175551

Price: £88.40
VAS150050
Ravenheat Expansion Vessel VAS150050

Part: VAS150050

Price: £75.71
18 Litre Poatable Expansion Vessel4
Heatrae Sadia 18L Potable Expansion Vessel

Part:

Price: £39.95
Fitting1
Expansion Vessel 3/4" x 22mm Brass Fitting

Part:

Price: £3.95
Expansion Vessel5
Heatrae Sadia Potable Expansion Vessel Bracket

Part: 381570

Price: £6.95
35 Litre Potable Expansion Vessel
Heatrae Sadia 35L Potable Expansion Vessel

Part:

Price: £94.50
24 Litre Potable Expansion Vessel
Heatrae Sadia 24L Potable Expansion Vessel

Part:

Price: £48.75
18 Litre Poatable Expansion Vessel
Heatrae Sadia 18L Potable Expansion Vessel

Part:

Price: £39.95
12 Litre Potable Expansion Vessel
Heatrae Sadia 12L Potable Expansion Vessel

Part:

Price: £29.95
8 Litre Potable Expansion Vessel
Heatrae Sadia 8L Potable Expansion Vessel

Part:

Price: £29.95
864067-3
Intergas Rapid Expansion Vessel

Part: 864067

Price: £77.00
864107-2
Intergas Expansion Vessel

Part: 864107

Price: £77.00
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Main 5114691 Combi Eco Elite Expansion Vessel

Part: 5114691

Price: £66.22
images/products/1.019603
Alpha 1.019603 CD50 Fixing Strap For Expansion Vessel

Part: 1.019603

Price: £3.95
images/products/5106287
Baxi 5106287 Powermax He Expansion Vessel

Part: 5106287

Price: £113.96
images/products/Baxi_Was_Part_Nu_4ef06762cb3df
Baxi 240388 Solo Bahama Combi He Plus Expansion Vessel

Part: 240388

Price: £106.88
S627534
Remeha Expansion Vessel S62753

Part: S62753

Price: £81.49
images/products/7207782014
Baxi 720778201 EcoBlue Hose For Expansion Vessel

Part: 720778201

Price: £21.73
images/products/2480252
Baxi 248025 Combi 80E Pipe For Expansion Vessel

Part: 248025

Price: £8.19
images/products/Baxi_18_Litre__E_50b75ef8e1271
Baxi P781 18 Litre Expansion Vessel

Part: P781

Price: £87.73
images/products/720759301
Baxi 720759301 Megaflow Netatec Expansion Vessel

Part: 720759301

Price: £78.88
images/products/Baxi_Expansion_V_4f4cb2819b888
Baxi 5114692 DuoTec Platinum 10L Expansion Vessel

Part: 5114692

Price: £59.95
images/products/5114691
Baxi 5114691 Duo-Tec, Megaflow, Platinum 8L Expansion Vessel

Part: 5114691

Price: £66.22
images/products/Baxi__Expansion__50aa64987fc57
Baxi 5113000 Combi Instant Expansion Vessel

Part: 5113000

Price: £82.59
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