Sioux Chief 645PX2 1/2 Inch Pex Barb Coupling Polymer 25 Pack

Product Description

The SIOUX CHIEF 645PX2 is a 1/2-inch PEX barb coupling designed for joining PEX tubing in residential and light commercial plumbing systems. Constructed from polymer, this fitting connects two runs of 1/2-inch PEX using a barbed push-and-crimp style connection compatible with standard PEX installation methods. Sold in bags of 25, the 645PX2 is a practical choice for plumbers stocking fittings for rough-in work or repair jobs that require multiple connections on a single project.

This coupling is used in hydronic heating systems, potable water distribution lines, and radiant floor installations where 1/2-inch PEX tubing is the standard pipe size. The barbed ends require a crimp ring or clamp ring tool for a secure, code-compliant connection. It is well suited for residential new construction, remodel work, and service calls where inline PEX splicing is needed.

Key Features

• 1/2-inch PEX barb on both ends for inline PEX-to-PEX connections
• Polymer construction resists corrosion and scale buildup
• Barbed profile compatible with crimp ring and clamp ring installation methods
• Sold in a 25-piece bag for efficient stocking and multi-connection jobs
• Compact fitting profile suitable for tight rough-in spaces

Compatibility

Designed as an OEM-style replacement and standard fitting for residential and light commercial PEX plumbing systems using 1/2-inch PEX tubing with barb-style connections.

Installation Notes

Installation should be performed by a licensed plumber in accordance with applicable local plumbing codes and ASTM F1807 or F2098 standards for PEX barb fittings. Shut off the water supply and relieve system pressure before cutting into any existing line. Use a properly calibrated crimp or clamp ring tool sized for 1/2-inch fittings to ensure a leak-free connection. Do not use barb fittings without an appropriately sized crimp or clamp ring.

Technical Specifications

• Connection Type: PEX Barb x PEX Barb
• Size: 1/2 inch x 1/2 inch
• Material: Polymer
• Quantity per Package: 25 pieces
• UPC: 739236457981

Standard Information

• Brand: SIOUX CHIEF
• Manufacturer Part Number: 645PX2