PPSU (Polyphenylsulfone) fittings are a high-performance, engineered polymer option for joining PEX pipes, prized for their exceptional durability and safety. This advanced thermoplastic material offers superior resistance to high heat, pressure, and chemical degradation, making it more robust than standard plastics. PPSU fittings are highly resistant to chlorine and other disinfectants found in municipal water supplies, preventing them from becoming brittle over time. They are lightweight, lead-free, and resist mineral buildup, ensuring a pure and efficient flow path. Certified for potable water and hydronic heating, PPSU fittings provide a reliable, corrosion-proof, and long-lasting connection for modern plumbing systems.