Sioux Chief 1/2 in. PEX x 1/2 in. Copper Pipe Adapter, Lead-Free, Copper

Sioux Chief 1/2 in. PEX x 1/2 in. Copper Pipe Adapter, Lead-Free, Copper

The 644X2 from Sioux Chief is a 1/2” PEX x 1/2” Copper Pipe Adapter, Lead Free.  Pipe Fittings

are used in pipe systems to connect straight pipe or tubing sections, to adapt to different sizes or shapes, and for other purposes, such as regulating or measuring fluid flow.

This fitting connects PEX tubing to copper pipe in a straight line


The POWERPEX collection by Sioux Chief offers all PEX systems and connections: ASTM F1807 Crimp™, ASTM F2080 Lock™ & ASTM F1960 Grip™. The industry’s most robust offering from valved terminations in Access Boxes, to water heater connectors, to copper assemblies, kits or manifolds. Grip fittings can be used with PEX-A tubing only.


·         One-piece solid copper

·         1” PEX connection x 1” Male Sweat Copper fitting;

·         PEX crimp style connection;

·         Meets ASTM F1807;

·         Corrosion-resistant, pure copper body

·         Lead-free, approved for potable water use.




Installation Guide:



Sioux Chief offers all major PEX systems. Sioux Chief’s PEX offering is the most complete in the plumbing industry. All fitting and tubing solutions carry a 25-year warranty, mixed or matched. Sioux Chief does not limit its warranty on tube or fittings based on matching system connections. This is unique.


PowerPEX is warranted across all three of Sioux Chief’s PEX system connection offerings, giving contractors the ability to choose the right tube or fitting connection for each application, layout or contractor comfort level. We call this Fitting Freedom™.


Sioux Chief believes intelligent systems may incorporate hybrid PEX offerings to maximize each connection system’s benefit. This Power to Choose™ puts the plumber back at the heart of smart plumbing.



For complete product instructions specifications and how-to installation please visit:

Jeannette Josue

Product Specs
Connection Type PEX to PIPE
Features Lead Free
Size1 1/2" x 1/2"
Type1 Pipe Adapter

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  • Sioux Chief 1/2 in. PEX x 1/2 in. Copper Pipe Adapter, Lead-Free, Copper QR Code
  • Model: 644X2
  • MPN: 644X2
  • Availability: 966
  • $ 0.75


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Contact us at 1-800-246-9552

Tags: Adapters, PEX Fittings, Plumbing Supply, PEX, Pipe Fittings, Residential Plumbing