Sioux Chief 645WGC4 1" CPVC x 1" F1960 PEX No-Lead Coupling

Sioux Chief 645WGC4 1" CPVC x 1" F1960 PEX No-Lead Coupling

Sioux Chief's 645WGC4 coupling delivers a quick and easy transition between 1" CPVC pipe and 1" F1960 PEX tubing, making it a practical solution for rough-in plumbers joining two different pipe materials behind the wall or under the floor. Manufactured as a no-lead fitting, this CPVC-bodied coupling is built for rough-in applications where a clean, reliable connection point is needed between rigid 1" CPVC branch lines and 1" F1960 expansion-style PEX tubing, without cutting into or re-piping an existing CPVC run.

Key Features

• Trade Size: Sized 1" CPVC x 1" F1960 for a direct one-to-one transition between pipe materials.
• Durable Construction: CPVC body construction stands up to the demands of rough-in installation behind walls and under floors.
• F1960 PEX Connection: One end is sized to the F1960 expansion connection standard for use with compatible PEX tubing and expansion tools.
• CPVC Transition End: The opposite end is sized for 1" CPVC pipe, letting plumbers move from CPVC branch lines to PEX tubing without re-piping the entire run.
• No-Lead Compliant: Manufactured as a no-lead fitting for rough-in potable-water applications.
• Quick, Simple Transition: Provides a quick and easy transition point between the two pipe systems in a single fitting, reducing labor time and the number of adapters needed on the rough-in.
• Packaged for the Trade: Sold 20 EA per carton for stocking trucks and rough-in crews that run through transition fittings regularly.

Certifications & Compliance

• No-Lead Compliant

Technical Specifications

• Country of Origin: China
• Packaging: 20 EA per carton

Typical Applications

• Residential and Commercial Rough-In Plumbing
• Transitioning CPVC Branch Lines to F1960 PEX Tubing
• New Construction Plumbing Rough-In
• Remodel and Retrofit Piping Projects
• Behind-the-Wall and Under-Floor Supply Connections
• Repair Points Where CPVC Must Tie Into a PEX Distribution System

Why Sioux Chief?

Sioux Chief builds rough-in fittings like the 645WGC4 coupling to give plumbers a dependable, no-lead solution for connecting CPVC and PEX piping systems without complicated workarounds. The straightforward one-end-CPVC, one-end-F1960-PEX design keeps rough-in installations quick and easy, so crews can move between pipe materials on a job site with a single fitting instead of stacking multiple adapters. Packaged 20 EA per carton, it's built to keep service trucks and rough-in crews stocked with a reliable CPVC-to-PEX transition part.