3/4 inch PEX Brass Insert Adapter Crimp x Male

3/4 inch Viega Brass PEX x Male Copper Adapter – ASTM F1807 Lead-Free Crimp Transition Fitting

The 3/4 inch Viega Brass PEX Adapter (PEX Crimp x Male Copper Sweat) is a transition fitting engineered for joining cross-linked polyethylene (PEX) tubing to copper pipe systems. Designed in compliance with ASTM and NSF standards, this adapter enables efficient integration of copper risers, stub-outs, or branch lines into PEX plumbing assemblies.

Fabricated from lead-free dezincification-resistant (DZR) brass, this fitting is suitable for use in potable water systems and meets all current U.S. low-lead content regulations. The crimp connection is compatible with ASTM F1807 installations using copper rings or ASTM F2098 stainless steel clamps, while the male sweat end allows for direct soldering into Type K, L, or M copper tubing.

Key Features for Jobsite Reliability

• ✅ Dual Material Transition Provides secure joining between PEX tubing and copper plumbing systems.
• ✅ Lead-Free Brass Construction Meets NSF/ANSI 61 and 372 requirements for potable water compliance.
• ✅ Crimp-Compatible PEX Connection Works with standard ASTM F1807/F2098 tooling for copper crimp rings or stainless steel clamps.
• ✅ Male Sweat End Designed for soldering into copper pipe using lead-free solder and standard flux.
• ✅ DZR Brass Material Resists corrosion and dezincification in high-chloride environments.

Technical Specifications

• Nominal Size: 3/4 inch PEX x 3/4 inch Male Copper (Sweat)
• Material: Lead-Free DZR Brass
• PEX Standard: ASTM F1807 / ASTM F2159
• Certifications: NSF/ANSI 61, NSF/ANSI 14, NSF 372, CSA B137.5
• Maximum Pressure: 160 PSI @ 73°F (typical for PEX systems)

Installation Guidelines

For the PEX side, ensure tubing is properly cut and reamed before crimping or clamping with manufacturer-approved tools. For the copper end, clean and flux the male adapter before soldering. Use lead-free solder only. Always follow local code and manufacturer specifications for joining dissimilar materials and testing assembled systems.

Application Scope

Ideal for potable water distribution in new construction or retrofit applications, particularly where transitioning from copper to PEX is required at manifolds, risers, or fixture branches. Commonly used in residential and light commercial plumbing systems.

Material Compliance Note

Lead-free brass fittings are mandated by the Safe Drinking Water Act and are required in all potable water systems in the United States. This Viega adapter meets those standards and is certified for direct contact with drinking water.

The 3/4 inch Viega PEX x Male Copper Adapter delivers a secure, code-compliant transition for professional-grade installations. It combines durability, corrosion resistance, and ease of integration across piping systems using both copper and PEX materials.