Sioux Chief sc-643x3 Pex Male Sweat Adapter 3/4 in

Product Description

The SIOUX CHIEF sc-643x3 is a one-piece straight adapter designed to connect 3/4-inch PEX tubing to a 3/4-inch male sweat (solder) copper fitting. Part of the Tomahawk PEX fitting line, this adapter allows plumbers to transition between PEX distribution lines and copper sweat connections in residential and light commercial water supply systems. The single-piece construction supports a clean, reliable joint with no additional coupling required. SIOUX CHIEF backs all Tomahawk fittings and tubing with a 25-year warranty regardless of whether tube and fittings are mixed across system types.

This adapter is suited for potable water supply installations where PEX tubing terminates at a copper sweat connection point, such as at shutoff valves, manifolds, or fixture supply stubs. It is a common solution in new construction and retrofit plumbing where installers are transitioning from a PEX run to an existing or new copper sweat assembly. Licensed plumbers and experienced plumbing contractors are the primary installers.

Key Features

• One-piece straight adapter — no extra coupling needed at the transition point
• 3/4-inch PEX inlet to 3/4-inch male sweat outlet configuration
• Part of the Tomahawk PEX fitting system, compatible with all major PEX connection methods
• 25-year warranty covering fittings and tubing, mixed or matched across system types
• Designed for potable water supply applications in residential and light commercial settings

Compatibility

Designed as an OEM-style replacement and new-installation fitting for use with 3/4-inch PEX tubing systems transitioning to 3/4-inch male copper sweat connections. Compatible with all major PEX system types per SIOUX CHIEF product documentation.

Installation Notes

Installation should be performed by a licensed plumber in accordance with local plumbing codes and the IPC. Shut off the water supply and depressurize the line before beginning work. The male sweat end requires standard soldering tools and flux-core solder appropriate for potable water service. Ensure the PEX connection method used is compatible with this fitting style before assembly.

Technical Specifications

• Inlet Connection: 3/4 inch PEX
• Outlet Connection: 3/4 inch Male Sweat (Solder)
• Configuration: Straight Adapter, 1-Piece
• Warranty: 25 years

Standard Information

• Brand: SIOUX CHIEF
• Manufacturer Part Number: sc-643x3