Based on this product's specifications, here are some alternatives and similar models
TDM Brass D20 Tee Fitting
Summary description:
The TDM Brass D20 tee is a high-quality plumbing fitting designed for secure pipe connections in water supply and heating systems. Made from durable brass, this component ensures reliable performance, corrosion resistance, and a leak-proof seal. It is suitable for professional plumbing installations and maintenance tasks requiring a standard D20 size connection.