Based on this product's specifications, here are some alternatives and similar models
PPSU Tee Fitting TECE 25 mm (model 8710925) for Plumbing and Pipe Connections
Summary description:
PPSU tee fitting by TECE, 25 mm nominal diameter, model 8710925. Designed for plumbing and pipe distribution systems, this three-way connector provides a branch connection between 25 mm PPSU pipes. Suitable for potable water and heating installations where PPSU material properties — chemical resistance and temperature endurance — are required. Used for creating T-joints in domestic and commercial pipework.