SPECIAL ORDER ITEM. Review Returns Policy before purchase. The Allen Company PEX fittings and accessories collection offers a robust solution for modern plumbing systems. Engineered from high-performance polyphenylsulfone, these components provide exceptional strength and reliability for both residential and commercial water distribution. The advanced material construction ensures long-term integrity, resisting common plumbing stressors while maintaining consistent flow performance. Designed for seamless integration into standard PEX piping layouts, these versatile fittings support a wide range of configurations, including adapters, couplings, elbows, and tees. Whether you are managing a new installation or performing essential maintenance, this collection delivers the durability and precision.