3/4 inch PEX Brass Insert Adapter PEX x Male

3/4" PEX Brass Insert Adapter – Lead-Free, Code-Compliant Transition Fitting

The 3/4" PEX Brass Insert Adapter is a precision-machined fitting used to create secure transitions between PEX tubing and threaded connections. Manufactured from lead-free brass and designed to meet ASTM and CSA standards, this fitting is a reliable choice for potable water systems, hydronic heating, and other pressurized applications.

Its insert-barb configuration ensures a mechanically sound connection when used with crimp rings, clamp rings, or expansion fittings in PEX piping systems. Threaded side enables integration with FNPT or other compatible components, simplifying installation in both residential and commercial systems.

Technical Features and Performance Attributes

• ✅ Standard Compliance – Conforms to ASTM F1807 or ASTM F2159 (depending on model), NSF/ANSI 61 and 372 certified for lead-free applications.
• ✅ Material Composition – Forged or machined lead-free brass alloy resists dezincification and corrosion in potable water environments.
• ✅ PEX End Compatibility – Designed for 3/4" nominal PEX tubing; supports installation with copper crimp, stainless steel clamp, or cold expansion methods.
• ✅ Threaded Adapter End – Male NPT (MNPT) thread enables a secure transition to metal or plastic fittings within plumbing manifolds or assemblies.
• ✅ High Pressure Rating – Rated for typical potable water and closed-loop heating system pressures when installed per manufacturer guidelines.

Installation Guidance

Use with appropriate PEX connection tools per system type (crimp, clamp, or expansion). Apply thread sealant or PTFE tape to threaded connections as required by local code. Ensure full barb engagement and uniform ring compression to avoid joint failure. Fitting must be pressure-tested prior to service activation.

Common Applications

This insert adapter is commonly deployed in:

• • Potable water distribution (hot and cold)
• • Radiant and hydronic heating systems
• • Service line retrofits and manifold connections
• • Remodel and new construction water piping layouts

Regulatory Note

Lead-free fittings are required for all potable water systems under the Safe Drinking Water Act (SDWA). This fitting is certified for use in low-lead installations and is listed by third-party agencies to ensure compliance with federal and state regulations.

Specification Summary

• Fitting Type: PEX Insert x Male NPT Adapter
• Nominal Size: 3/4"
• Material: Lead-free brass
• PEX Compatibility: ASTM-compliant 3/4" PEX tubing
• Certifications: NSF 61, NSF 372, ASTM F1807 or F2159

The 3/4" PEX Brass Insert Adapter delivers consistent sealing, long-term durability, and straightforward integration with standard PEX plumbing systems. Its compliant construction and dimensional accuracy make it a dependable choice for professional-grade installations.