SPECIAL ORDER ITEM. Review Returns Policy before purchase. The Mainline Collection tee fitting provides a reliable solution for residential and commercial plumbing needs. Engineered for versatility, this component is designed for use with potable water, distribution systems, and hydronic heating applications. Crafted from dezincification-resistant lead-free forged brass, it offers exceptional structural integrity and long-term performance in demanding environments. This fitting is fully compatible with PEX pipe meeting ASTM- F876-877 standards and integrates seamlessly with copper crimp rings or stainless clamps. Its robust construction ensures a secure, leak-resistant connection, making it an essential choice for professional-grade plumbing installations that require durability and compliance with modern safety standards.