Based on this product's specifications, here are some alternatives and similar models
Expansion/Diaphragm Vessel CIMM AFE 50 L for Domestic Hot Water, 1.5/10 bar, -10 to +100°C
Summary description:
CIMM AFE 50 L diaphragm (expansion) vessel designed for domestic hot water (c.w.u.) systems. Rated volume 50 litres, precharge 1.5 bar, maximum working pressure 10 bar, and operating temperature range −10 to +100°C. Used to absorb thermal expansion, stabilize system pressure and protect plumbing in hot-water installations and water heaters.