Based on this product's specifications, here are some alternatives and similar models
Storage tank Sunsystem PSM50 suspended 50 L for closed heating and solar systems
Summary description:
Suspended storage tank Sunsystem PSM50, 50 L capacity, designed for closed heating and solar systems. Wall-mounted buffer provides hydraulic separation and thermal storage for small installations, helping to stabilize pressure fluctuations and improve heat exchange efficiency. Suitable for integration with residential boilers, heat pumps and solar loops, offering compact installation and enhanced system protection.