3/4 in. PEX-A Expansion x Female HEX Adapter FNPT NSF Lead Free Brass ASTM F1960 Cold Expansion PEX Fitting

The 247Garden 3/4 in. PEX-A Expansion x Female HEX Adapter is a professional-grade plumbing fitting designed for high-performance potable water and hydronic heating systems. Engineered for 3/4 inch PEX-A tubing, this adapter combines the superior durability of lead-free, dezincification-resistant (DZR) brass with the efficiency of cold-expansion technology, providing long-term reliability and corrosion resistance in residential, commercial, and industrial plumbing applications.

Unlike standard PEX fittings, the 3/4 inch Expansion Adapter features a larger internal diameter, delivering up to 25% greater flow for faster water distribution and improved system efficiency. The female HEX end connects easily to standard 3/4 inch threaded outlets, allowing seamless integration into complex plumbing layouts, manifold systems, and hydronic loops.

Installation and Performance:

This adapter is specifically designed for use with 247Garden Expansion PEX rings or compatible expansion-type rings (sold separately). Installation requires a cold-expansion tool (sold separately), which expands the PEX tubing to fit over the barbed end of the adapter. Once the tubing contracts, the connection forms a secure, leak-free seal that meets or exceeds ASTM F1960 standards. Cold-expansion fittings do not require go/no-go gauges, ensuring consistent and reliable performance while reducing installation errors.

Key Features and Benefits:

• Compatibility: Works with Uponor, Wirsbo, and other PEX-A tubing systems

• Cold-Expansion Technology: Creates a secure, leak-free connection with expansion rings (sold separately)

• Durable Construction: Lead-free, dezincification-resistant (DZR) brass for long-term reliability and corrosion resistance

• Standards Compliant: Meets or exceeds ASTM F1960, cUPC, UPC, and IPC certifications

• NSF Certified: Suitable for potable water applications

• High Flow Efficiency: Larger internal diameter increases flow rate by up to 25%

• Temperature and Pressure Rating: Rated for 200°F and 200 PSI for versatile use

• Installation Notes: Fittings must be used with 3/4 inch Expansion PEX-A rings; cannot be dry-fit

• Versatile Application: Ideal for residential, commercial, and industrial water distribution, hydronic heating systems, manifold connections, and plumbing retrofits

The 247Garden Expansion PEX system provides a complete, integrated solution for modern plumbing installations. Alongside this adapter, the system includes lead-free brass and poly-alloy fittings, manifolds, valves, fasteners, tools, and tubing. Designed for professional plumbers and DIY enthusiasts alike, this 3/4 inch PEX-A Expansion Adapter delivers dependable, long-lasting performance, simplifies installation, and ensures optimal flow efficiency in all PEX-A plumbing applications.