Based on this product's specifications, here are some alternatives and similar models
PPR fitting Supratherm 25 mm model 2203893 for polypropylene piping systems
Summary description:
PP-R (polypropylene random copolymer) fitting Supratherm 25 mm, model 2203893. Designed for joining 25 mm polypropylene piping in water supply and heating systems. Provides reliable, corrosion-resistant connections compatible with PPR installations. Suitable for residential and commercial plumbing where durable plastic fittings are required.