Ariston Kit A 2 Litre Expansion Vessel and Non Return Valve

£35.20 £42.24 (inc vat)

Out of stock

Product Description

Ariston Kit A Expansion Vessel and Non Return Valve

Model: 406801

An expansion vessel is a device that takes up the expansion of water in the domestic hot water system when it is heated. This prevents build up of excess pressure.

The non-return valve prevents backflow of expanded hot water in to the cold water main.