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Ferroli 39804890 Modena Domina 80 (8 Litre) Expansion Vessel | AK Gas Appliance & Spares Ltd

Ferroli 39804890 Modena Domina 80 (8 Litre) Expansion Vessel

This Ferroli Expansion Vessel 39804890 helps to ensure pressure within the boiler and heating system remains stable.

Price: £84.95



Ferroli 39804890 Modena Domina 80 (8 Litre) Expansion Vessel

This Expansion Vessel 39804890 Is Now An 8 Litre Vessel. Some Models Had A 7 Litre Expansion Vessel Fitted When Manufactured But This 8 Litre Vessel Now Replaces Them.

This Ferroli Expansion Vessel is in the boiler to ensure that the pressure within the boiler remains reasonably stable. The most common problem customer?s encounter when a Ferroli expansion vessel is faulty is the boiler pressure builds to 3 bar when switched on (approx. after 10 ? 15 minutes). At this point hot water starts to dribble through the 3 Bar Safety Valve (Prv) then outside via the discharge pipe.

When the boiler cools down the pressure in the boiler falls to 0 bar and will not start, this is because the expansion vessel couldn't control the pressure within the boiler. The customer will then refill the boiler back up using the filling loop normally located below the boiler. Once the correct pressure is reached (1 Bar normally) the boiler will start to work again.

Most Engineers Change The Pressure Relief Valve When Changing The Expansion Vessel 39804890, Please Read Why Below.

Normally when this expansion vessel fails the pressure relief valve is constantly open ensuring the boiler doesn?t work above 3 bar pressure and because of this the pressure relief valve needs changing as well.

Debris from within the boiler gets trapped on the seat of the pressure relief valve which prevents the pressure relief valve from re-sealing thus allowing the boiler to loose pressure. If you check below we may have displayed the pressure relief valve you require, if so please add it to the basket if you feel you require one.

This Product Fits The Following Boilers:
Ferroli Domina 80 E Mf01
Ferroli Domina 80 E Mf02
Ferroli Domina 80 E Mf03
Ferroli Domina 80N
Ferroli F24
Ferroli F24 B
Ferroli Modena 80 E Mf01
Ferroli Modena 80 E Mf02
Ferroli Modena 80 E Mf03
Guarantees & Warranties
All parts sold by AK Gas Appliance & Spares Ltd are brand new, they are not used or reconditioned in any way. When buying from us you can rest assured your product is CE Approved and comes with a 1 Year Warranty.
Essential Information

This is Genuine Manufactured Part

This spare part is an original manufactured part, it has been supplied by the boiler manufacturer and comes with all their guarantees and warranties (normally 12 months).

Most genuine parts supplied by the manufacturer are packaged in original packaging authenticating their quality and origin. Note some original parts don’t come in any packaging and in these cases, we package the part to ensure the part is totally protected and arrives in perfect condition.

If other companies are selling this part at a substantially lower price than us there is a very good chance that their part is either compatible, re-conditioned, used or OEM. If this is the case then our competitor’s parts will not have been supplied by the boiler manufacturer.

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