The Ariston KIT A 2L Expansion Vessel Kit with Non Return Valve is a genuine Ariston manufactured component designed to support stable pressure control in sealed heating systems. Unlike third party replacements or compatible alternatives, this original unit is produced by Ariston to match system requirements and ensure correct fit and operation.

As water heats within a system, it expands and increases pressure. This expansion vessel provides space for that increase, helping to manage pressure levels and reduce stress on system components. It plays an important role in maintaining balanced and controlled system performance.

With a compact 2 litre capacity, this expansion tank is well suited to installations where space is limited. It can be installed under boilers, within cupboards, or in tight utility areas without requiring major layout adjustments.

This kit includes both the expansion vessel and a non return valve, providing a convenient installation solution. The valve helps maintain correct flow direction while the vessel supports pressure control, allowing the system to operate more efficiently.

Constructed with a durable steel outer shell and internal diaphragm, the vessel is designed for reliability in heating environments. It connects via a standard threaded fitting and integrates into typical system setups when correctly specified.

This product is intended for use in sealed heating systems and boiler applications where expansion management is required. It is important to confirm compatibility with your specific system before installation, particularly regarding vessel size and application type.

A practical and reliable solution, this genuine Ariston expansion vessel kit supports stable system operation and helps maintain consistent pressure control.