Based on this product's specifications, here are some alternatives and similar models
Compression reducing coupling Comap MultiSkin PPSU 32x20 – reducing fitting 32 mm to 20 mm
Summary description:
Comap MultiSkin PPSU compression reducing coupling, model 9240W3220, designed to join 32 mm to 20 mm pipes. Made from PPSU for chemical and temperature resistance, this press-fit reducing fitting provides a leak-tight mechanical connection for potable water and heating systems. Suitable for repairs, pipe transitions and installations where pipe diameter step-down is required.