Sioux Chief 641xg111 Pex Brass Insert Tee 3/8 Inch Crimp

Product Description

The SIOUX CHIEF 641xg111 is a 3/8 inch brass insert tee fitting designed for crimp-style connections in residential and commercial PEX plumbing systems. It provides a three-way branch connection — inlet on one end, two outlets on the other — making it a practical choice for compact distribution runs in potable water systems. All three ports use a crimp connection style, compatible with copper crimp rings per ASTM F1807 or stainless steel clamps per ASTM F2098. The fitting is machined from brass for durability and corrosion resistance in wet service environments. Overall dimensions are approximately 1 inch in length, 1.8 inches in width, and 0.45 inches in height.

This fitting is suited for branch connections in residential water supply lines, manifold-fed distribution systems, and retrofit plumbing projects where 3/8 inch PEX tubing is in use. It is compatible with PEX tubing conforming to ASTM F876 and F877. Plumbers and pipefitters working on potable water systems, radiant heating loops, or PEX rough-in work will find this tee appropriate for tight-space installations where a reliable mechanical crimp connection is required.

Key Features

• Three-port crimp connection — all ends are crimp style for consistent, tool-based installation
• Brass construction provides corrosion resistance for potable water applications
• Compatible with copper crimp rings (ASTM F1807) and stainless steel clamps (ASTM F2098)
• Rated for use with PEX tubing conforming to ASTM F876 and F877
• Compact profile — 1 inch length, 1.8 inches width, 0.45 inches height — suits tight installations

Compatibility

Designed for use with 3/8 inch PEX tubing conforming to ASTM F876 and F877, installed using copper crimp rings or stainless steel clamps meeting ASTM F1807 or F2098 standards.

Installation Notes

Installation is performed by licensed plumbers or qualified pipefitters. Shut off the water supply and depressurize the line before cutting into any existing PEX run. A calibrated PEX crimp tool rated for 3/8 inch fittings is required to properly seat the crimp ring; a go/no-go gauge should be used to verify the crimp after connection. Follow all applicable local plumbing codes and ASTM installation standards for PEX crimp fittings in potable water systems.