Feed & Expansion Tanks

Feed and Expansion Tank Explained

The feed and expansion tank tends to be located in the loft and as the name suggests is designed to top up the central heating system with cold water as well as providing somewhere for the hot water to go in the event that your system overheats. It plays a key role in open vented systems and can reduce the likelihood of pressure damage caused to the system.

Our high temperature feed and expansion tanks are designed to be used with open vented systems, especially when combined with additional fuel sources such as wood burning stoves, where overheating can become a real issue. The copper feed and expansion tanks can cope with potentially high temperatures that could reach as high as 100°C.

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Design of Feed and Expansion Tank

Why choose copper feed and expansion tanks?

  • Can cope with temperatures over 100°C
  • No chance of meltdown in an overheat situation
  • Factory fitted insulation minimises dangers of freezing
  • Proven to be healthy and safe
  • Copper is 100% recyclable, benefiting the environment

Supplied With All Units

  • Maintenance free Jetseal ball valve
  • Copper float
  • 35mm foam lagging
  • Alloy lid

Extras Available As Option

  • Different sizes to suit space restrictions
  • Any capacity as required
  • Compression Connections
  • Connection sizes and positions adjusted to suit

Feed and Expansion Tanks Technical Data

For a guide to sizing and dimensions simply visit our sizing page. In addition to our standard sizes we offer a bespoke service creating tailored units - to discuss your options just contact us on 01592 611123 or contact us online.

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McDonald Water Storage: Suppliers of feed and expansion tanks across the UK and Ireland.