3/4 inch PEX Brass Insert Adapter PEX x Copper

3/4" PEX x 3/4" Copper Adapter – Lead-Free Brass Transition Fitting

This 3/4" PEX x 3/4" Copper Adapter provides a direct transition between cross-linked polyethylene (PEX) tubing and nominal copper pipe. Constructed from certified lead-free brass, this fitting meets current potable water standards and is suitable for permanent installations in both residential and commercial systems.

Engineered to support cold and hot water distribution lines, this adapter allows for the integration of copper systems with ASTM F1807 PEX systems via crimp or clamp connections. It maintains dimensional accuracy and structural integrity under typical service pressures and temperature ranges associated with domestic water systems.

Product Features and Technical Performance

• ✅ Connection Type: Crimp or clamp connection for PEX; sweat connection for copper pipe
• ✅ Material: No-lead brass (<0.25% weighted lead content)
• ✅ Pressure Rating: 160 psi at 73°F, 100 psi at 180°F (as per PEX system limitations)
• ✅ Standards: Compliant with NSF/ANSI 61, NSF/ANSI 372, and ASTM F1807/F877
• ✅ Use Case: Facilitates permanent connections in new construction and retrofit systems involving mixed-material distribution lines

Installation Guidelines

Ensure proper pipe preparation by cutting PEX square and deburring copper before installation. Use ASTM F1807-approved crimp rings or clamps on the PEX end and standard soldering procedures for the copper end. Avoid over-torquing or excessive heating during soldering, and follow applicable local plumbing codes and system manufacturer instructions.

Application Scope

Commonly applied in potable water supply systems, manifold branches, and fixture stub-outs requiring copper-to-PEX transitions. Suitable for both vertical and horizontal runs in residential and light commercial water delivery systems where dissimilar piping materials intersect.

Regulatory Information

This product is manufactured in accordance with the Reduction of Lead in Drinking Water Act (2014), which mandates the use of fittings with a lead content of no more than 0.25% in systems delivering potable water. This adapter satisfies all relevant code requirements in all U.S. jurisdictions.

The 3/4" PEX x 3/4" Copper Adapter is a key component in hybrid system design, offering compatibility with modern PEX installations while maintaining legacy copper infrastructure. Designed for durability and compliance in pressure-rated systems.