FERROLI  39821460

FERROLI 39821460

Previous Code: 3680279/0



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Buy your Ferroli 39821460 - Arena 20 - 30a Expansion Vessel 12 Litre today, with a fast UK delivery..

Previous Ferroli Part Codes: 802790, 36802790, 3680279/0

The Ferroli Arena 20 - 30A expansion vessel is a device to handle the expansion of water in a heating system or hot water system due to increases in temperature. When water increases in temperature it expands, in particular when it is stored under pressure such as in a sealed heating system or an unvented hot water cylinder. Expansion tanks typically contain a cylinder or disc which is divided inside into two compartments separated with a rubber sheet, known as the diaphragm. Inside the expansion vessels there is water on one side of the diaphragm and air or an inert gas such as nitrogen under pressure on the other side. An air valve much like those found on bike and car tyres is typically provided on the air side to allow the system to be re-pressurised., Ferroli Expansion Vessel Are Dispatched Same Day, For Next Working Day Delivery


FERROLI Boiler Spares orders - delivered within 24 hours for all in-stock FERROLI spare parts, when purchased before 3pm. We also supply many other spare parts and accessories for FERROLI boilers.


  • Warranty

    FERROLI spare parts come with manufacturers standard twelve months warranty.

  • Warning

    When replacing any spare part on appliances, use only genuine boiler spare parts that you can be assured conform to the safety and performance specification that the boiler manufacturer recommends. For your safety & your families, please do not use reconditioned or copy parts that have not been clearly authorised by the boiler manufacturer.