Sioux Chief sc-645xc4 1 Inch Pex Crimp X Cpvc Straight Adapter

Product Description

The SIOUX CHIEF sc-645xc4 is a straight adapter coupling that connects F1807 PowerPEX crimp PEX tubing to CPVC pipe in a single fitting. Made from copper, this lead-free adapter is rated for potable water systems and provides a reliable mechanical transition between PEX and CPVC piping. The 1-inch nominal size fits standard residential and light commercial supply lines. Licensed plumbers and pipe fitters install this fitting during new construction, remodel, or repair work where PEX and CPVC systems must be joined at a single point.

This adapter is used in residential and light commercial plumbing systems where F1807 PEX crimp tubing meets CPVC distribution piping. It is a common fitting in hybrid plumbing layouts that combine PEX flexible tubing runs with existing or new CPVC branch lines. The copper construction makes it suitable for both hot and cold water supply applications.

Key Features

• Straight adapter design transitions F1807 PowerPEX crimp end to CPVC socket end in one fitting
• 1-inch nominal size for standard residential and light commercial supply lines
• Copper construction for durability in potable water service
• Lead-free compliant for use in drinking water systems
• Compatible with standard PEX crimp ring installation tools

Compatibility

Designed as an OEM-style replacement or new-installation fitting for 1-inch F1807 PEX crimp to 1-inch CPVC plumbing connections in residential and light commercial potable water systems.

Installation Notes

Installation is performed by a licensed plumber following applicable IPC and local plumbing code requirements. Shut off the water supply and depressurize the line before cutting or joining any pipe. The PEX crimp end requires a calibrated F1807 crimp ring tool and a go/no-go gauge to verify the crimp; the CPVC end requires appropriate CPVC solvent cement rated for the pipe material. Do not use this fitting with PEX-A expansion or clamp-style connections on the PEX side.

Technical Specifications

• Nominal Size: 1 inch
• End Style: F1807 PowerPEX Crimp x CPVC
• Material: Copper
• Lead Free: Yes
• Connection Type: Straight Adapter

Standard Information

• Brand: SIOUX CHIEF
• Manufacturer Part Number: sc-645xc4