Santon ALK05 Water Heater Expansion Kit | 94970012

The Santon ALK05 94970012 is a genuine expansion kit for compatible small unvented water heaters. It is used where thermal expansion cannot be accommodated back into the incoming cold-water main, providing the additional expansion space and backflow control required by the installation design.

The kit includes an expansion vessel and check valve for use with compatible Santon Aquaheat and related point-of-use systems, subject to the appliance instructions.

Key features

• Genuine Santon ALK05 installation kit
• Manufacturer part number 94970012
• Includes expansion vessel and check valve
• Supports correct thermal-expansion control
• For compatible small unvented water-heater installations

Compatibility and installation

Do not select an expansion kit by appearance alone. Check the water-heater model, vessel size, system pressure, cold-water arrangement and current manufacturer instructions. The vessel pre-charge and installation position must be correct, and the system must be tested after fitting. Unvented water-heater controls are safety critical and should be installed and commissioned by a suitably qualified professional.