Sioux Chief sc-644x4 Pex Adapter 1 in Female Sweat X Pex Barb

Product Description

The SIOUX CHIEF sc-644x4 is a Tomahawk straight adapter designed to transition a 1-inch female sweat (copper socket) connection to a 1-inch PEX barb fitting. It is a one-piece adapter used in potable water and hydronic plumbing systems where copper pipe meets PEX tubing. Licensed plumbers and PEX system installers use this fitting to make that transition cleanly and reliably. The adapter is part of the Sioux Chief Tomahawk PEX fitting line, which covers all major PEX connection systems and is backed by a 25-year warranty on fittings and tubing regardless of mixed or matched system connections.

This adapter is suited for residential and light commercial plumbing installations where a copper supply line or stub-out must connect to a PEX distribution run. Typical applications include new construction rough-in, remodel tie-ins at water heaters or shut-off valves, and retrofit work converting copper systems to PEX. The female sweat end accepts standard copper pipe for soldering, and the barb end secures PEX tubing with a crimp ring or clamp ring per the installer's preferred method.

Key Features

• One-piece Tomahawk straight adapter construction for a reliable, low-profile transition
• 1-inch female sweat inlet accepts standard copper pipe for soldered connection
• 1-inch PEX barb outlet compatible with crimp-ring and clamp-ring installation methods
• Covered by Sioux Chief 25-year warranty on fittings and tubing, mixed or matched systems
• Part of the most complete PEX fitting and tubing offering in the plumbing trade

Compatibility

Designed as an OEM-style replacement and new-installation fitting for PEX plumbing systems requiring a 1-inch female sweat to 1-inch PEX barb transition. Compatible with all major PEX system types per Sioux Chief's mixed-and-matched warranty policy.

Installation Notes

Installation is performed by a licensed plumber. Shut off the water supply and depressurize the line before beginning work. Solder the female sweat end onto the copper pipe using standard lead-free solder and flux per applicable plumbing codes, then allow the fitting to cool fully before securing PEX tubing to the barb end with an appropriate crimp ring or clamp ring tool. Follow local plumbing code and IPC requirements for fitting support, pressure testing, and approved materials.

Technical Specifications

• Fitting Type: Straight Adapter
• Inlet Connection: 1 inch Female Sweat (Copper Socket)
• Outlet Connection: 1 inch PEX Barb
• Pieces: 1
• Warranty: 25 years

Standard Information

• Brand: SIOUX CHIEF
• Manufacturer Part Number: sc-644x4