Based on this product's specifications, here are some alternatives and similar models
Storage Tank Biawar MEGA standing enamelled 220 L with two heat exchangers BA-ST 9022-2FE
Summary description:
Standing enamelled storage tank Biawar MEGA, model BA-ST 9022-2FE, with 220‑litre capacity and two internal heat exchangers. Designed for hot water storage in heating and domestic hot water systems, it provides separation between primary heating circuit and potable water, supports integration with boilers, heat pumps or solar systems and enables efficient heat transfer and stratification.