Based on this product's specifications, here are some alternatives and similar models
Pipe fitting Uponor S-Press PLUS coupling with internal thread 20 mm - Rp 3/4F
Summary description:
Uponor S-Press PLUS coupling with internal thread is a 20 mm press fitting with Rp 3/4 female thread designed for secure connection between plastic piping and threaded components. Made for use in potable water and heating systems where press technology is required, it ensures fast installation with press tooling and reliable sealed joints for pipelines and radiator connections.