1/2 inch x 3/4 inch PEX Brass Reducing Insert Adapter Crimp x Female

1/2 Inch x 3/4 Inch PEX Brass Reducing Insert Adapter – Crimp x Female NPT

This 1/2 inch PEX x 3/4 inch FNPT brass reducing insert adapter is engineered for use in potable water and hydronic systems requiring a secure transition between PEX tubing and threaded connections. Designed to ASTM F1807 specifications, the fitting features a crimp-style insert end and a female NPT outlet, providing flexibility in mixed-material system configurations.

Technical Performance and Build

Constructed from lead-free, dezincification-resistant (DZR) brass, this adapter delivers long-term reliability under varying pressure and temperature conditions. It supports compliant use in applications governed by IPC, UPC, and NSF standards. Key features include:

• ✅ Lead-Free DZR Brass – Compliant with NSF/ANSI 372 and suitable for potable water systems.
• ✅ Crimp PEX Connection – Compatible with copper crimp rings or stainless steel clamp rings for ASTM F1807 and F2159 systems.
• ✅ Threaded FNPT Outlet – Female National Pipe Thread connection allows integration with metal valves, nipples, or threaded fixtures.
• ✅ Size Transition – Provides a secure reduction from 1/2 inch PEX tubing to 3/4 inch threaded components.

Contractor Installation Guidance

Install using standard PEX crimp tools and gauges. Ensure thread sealant or PTFE tape is applied to the male-threaded mating component to achieve leak-free performance. Avoid over-torqueing during assembly. This adapter is not intended for use in fuel gas or compressed air systems.

Common Applications

Used in residential and light commercial plumbing where transition is required from PEX distribution loops to threaded inlets—such as water heater intakes, manifold takeoffs, or stub-out assemblies. Ideal for both new construction and retrofit environments where mixed piping materials are specified.

Code Compliance Note

All materials meet applicable plumbing code requirements for lead content, dimensional tolerance, and potable water safety. Use in accordance with ASTM F877 and installation best practices for pressurized systems.

The 1/2 Inch x 3/4 Inch PEX Brass Reducing Insert Adapter (Crimp x FNPT) offers a durable, code-compliant transition solution for professional-grade plumbing systems. Engineered for performance, it's a reliable component for adapting PEX tubing to threaded terminations in modern supply networks.