The Apollo ExpansionPEX 1 inch Brass PEX-A Barb x 1 inch FNPT Female Adapter is designed for cold-expansion installation in potable water and hydronic heating systems. Constructed from lead-free, dezincification-resistant (DZR) brass, this fitting features a larger internal diameter than traditional crimp fittings, providing a 25% greater flow rate. It is exclusively compatible with PEX-A tubing and must be secured using PEX-A expansion sleeves or rings. A cold-expansion tool is required for installation. This adapter meets ASTM F1960 standards and is NSF listed for safety and performance

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