Ariston 406801 Kit A Expansion Vessel 2 L & Non-Return Valve

This kit combines an expansion vessel with a non-return valve designed to accommodate the expansion of water in domestic hot water systems as it heats, preventing excessive pressure. It is suitable for use with Ariston Andris R or Andris Lux Eco water heaters and is model 406801. The assembly is UKCA certified for installation in the UK and is intended to protect closed water heating systems from pressure buildup. The kit supports reliable operation by ensuring backflow prevention and safe pressure management within the system.

Technical specifications

• Capacity: 2 L
• Includes expansion vessel and non-return valve
• Protects closed water heating systems from excessive pressure
• Optional use with Ariston Andris R or Andris Lux Eco
• Model number: 406801
• Fully UKCA certified