Ariston Water Heater Kit A - 2 Litre Expansion Vessel & Non-return Valve

Ariston Water Heater Kit A – 2 Litre Expansion Vessel & Non-return Valve

Ensure your Ariston unvented water heater operates safely and efficiently with the Ariston Water Heater Kit A – 2 Litre Expansion Vessel & Non-return Valve. This essential component is designed to absorb excess pressure caused by water expansion during heating cycles, preventing damage to your system and maintaining consistent performance. Ideal for both domestic and light commercial installations, this genuine Ariston accessory guarantees compatibility and long-term reliability.

Key Features

• Protects Against Pressure Build-Up: Safely accommodates the natural expansion of heated water, reducing stress on internal components.

• Integrated Non-Return Valve: Prevents backflow into the cold water supply for improved system safety and compliance.

• Compact & Space-Saving Design: With its small form factor, the vessel can be easily installed close to the water heater.

• Durable Construction: Steel body with corrosion-resistant coating ensures long service life and dependable performance.

• Genuine Ariston Component: Designed and manufactured to meet Ariston’s exact quality standards for unvented systems.

Heating Performance and Technical Information

The Ariston Kit A Expansion Vessel is a critical safety accessory for unvented water heating systems. During operation, water expands as it heats — without an expansion vessel, this increase in pressure can place unnecessary strain on the heater and pipework. The 2 litre vessel absorbs this pressure safely, maintaining system equilibrium and ensuring reliable performance.

The kit also includes a ½″ BSP non-return valve, preventing heated water from returning to the cold supply. Engineered for maximum working pressures up to 10 bar and temperatures up to 99 °C, the Kit A offers excellent durability and regulatory compliance.

Additional Technical Details

• Capacity: 2 litres

• Height: 237 mm

• Diameter: 125 mm

• Maximum Working Pressure: 10 bar

• Maximum Operating Temperature: 99 °C

• Connection Size: ½″ BSP

• Pre-Charge Pressure: Approx. 4.1 bar

• Suitable for Ariston and Europrisma unvented systems

• Supplied with Non-Return Valve (NRV)

Summary

The Ariston Water Heater Kit A – 2 Litre Expansion Vessel & Non-return Valve is an indispensable component for maintaining pressure stability and safety within your unvented hot water system. Compact, durable, and fully compliant with UK regulations, this genuine Ariston accessory ensures consistent performance and peace of mind for years to come.