Sioux Chief 642px4 Polymer Pex Crimp 90 Degree Elbow 1 in

Product Description

The SIOUX CHIEF 642px4 is a 1-inch polymer PEX crimp 90-degree elbow fitting designed for hot and cold potable water distribution systems. Manufactured to ASTM F2159 standards, it uses a crimp-style connection compatible with copper crimp rings or stainless steel compression sleeves. The polymer body is produced in white, which allows installers to visually detect harmful chemical exposure or UV degradation over time. Positioning fingers molded into the fitting accurately align the crimp ring or compression sleeve over the sealing barbs, reducing the chance of installation error. Licensed plumbers install this fitting as part of residential and light commercial PEX piping systems.

The 642px4 is suited for residential and light commercial hot and cold water distribution applications where PEX tubing conforming to ASTM F876 is specified. The 90-degree configuration is used at directional changes in supply lines, branch runs, and wall-stub-out locations. The crimp-sleeve connection method is widely accepted under current plumbing codes and works with standard PEX crimp tools available to most plumbing contractors. This fitting is available in a range of configurations within the Sioux Chief F2159 polymer PEX crimp system.

Key Features

• ASTM F2159 compliant polymer PEX crimp fitting
• Positioning fingers precisely align crimp ring or stainless steel compression sleeve over sealing barbs
• White polymer body provides visual indication of chemical exposure or UV degradation
• Compatible with copper crimp rings and stainless steel compression sleeves
• 90-degree elbow geometry for directional changes in PEX supply runs
• Approved for use with ASTM F876 PEX tubing

Compatibility

Designed for use with ASTM F876 PEX tubing using copper crimp rings or stainless steel compression sleeves, as part of the ASTM F2159 crimp polymer PEX fitting system for hot and cold water distribution.

Installation Notes

Installation is performed by a licensed plumber using a calibrated PEX crimp or clamp tool appropriate for the sleeve type. Shut off the water supply and depressurize the line before cutting and fitting. Verify that the crimp ring or compression sleeve is fully seated over the positioning fingers before crimping. Work must conform to applicable local plumbing codes and the International Plumbing Code where adopted.