Sioux Chief 640PX1 Series PEX Barb Test Plug, Poly Construction

Sioux Chief 640PX1 Series PEX Barb Test Plug, Poly Construction

The Sioux Chief 640PX1 Series Poly PEX Barb Test Plug is a family of barbed poly plugs built to seal open PEX tubing runs during pressure testing before fixtures, valves, and final connections go into place. This series is available in 1/2", 3/4", and 1" sizes across the 640PX12, 640PX13, and 640PX14 configurations, giving plumbing contractors and PEX installers a dependable, low-cost way to close off open PEX runs on rough-in jobs while the system is checked for leaks. Molded from durable poly for corrosion resistance, every plug in the 640PX1 Series is manufactured in Cambodia and supplied 20 per bag for convenient jobsite stocking.

Key Features

• Trade Size Range: Available in 1/2", 3/4", and 1" sizes to match standard residential and commercial PEX rough-in systems.
• Durable Poly Construction: Molded poly material resists corrosion and holds up to repeated jobsite handling during testing and rough-in work.
• Barb Connection: Barbed profile creates a secure push-fit seal against the inside of PEX tubing, holding pressure during system testing.
• Reliable Temporary Seal: Plugs open PEX line ends so installers can pressure-test a run before permanently terminating it with a fitting or fixture.
• 640PX1 Series Coverage: Available as 640PX12, 640PX13, and 640PX14 configurations to match different rough-in and testing needs on the job.
• Convenient Bag Packaging: Supplied 20 per bag so crews can restock test plugs on the truck without breaking into bulk cartons or counting loose parts.
• Country of Manufacture: Produced in Cambodia under Sioux Chief's quality control standards.

Technical Specifications

• Refer to manufacturer documentation for complete technical specifications.

Typical Applications

• Residential and Commercial Plumbing Rough-In
• PEX Tubing Pressure Testing Before Final Trim-Out
• New Construction and Remodel Plumbing Projects
• Temporary Capping of Open PEX Lines During Installation
• PEX Manifold and Branch Line Testing
• Rough-In Inspection Prep on PEX Distribution Systems

Why Sioux Chief?

Sioux Chief builds plumbing rough-in products that contractors rely on to keep jobs moving, and the 640PX1 Series poly test plugs are no exception. Their barbed poly construction gives installers a fast, secure way to seal PEX lines for pressure testing across the 1/2", 3/4", and 1" sizes offered in the 640PX12, 640PX13, and 640PX14 configurations, so crews can confirm a system holds before committing to final connections. Backed by consistent manufacturing out of Cambodia and packaged 20 per bag for jobsite efficiency, these test plugs help plumbing professionals keep rough-in work moving on schedule without stopping to source a substitute plug mid-job. Whether capping a single branch line or an entire manifold of open PEX runs, the 640PX1 Series gives crews a reliable, repeatable way to verify a system before final trim-out, reducing callbacks and helping every rough-in pass inspection the first time.