Sioux Chief 640PX1 Series PEX ...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$19.84
Sioux Chief 640PX1 Series PEX Barb Test Plug, Poly Construction

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

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Model: 640PX12

In Stock (leaves warehouse same day if ordered before 3pm ET)

$19.84
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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.

Product Specs

Product Type:
Test Plug
Connection Type:
Barb
Series:
640PX1
Department:
Plumbing
Product Group:
Rough-In and Supports
Product Subgroup:
Fittings and Valves
Product Material:
Poly
Product Size:
1/2" - 1"
Country of Origin:
Cambodia

Sioux Chief 640PX12 – Frequently Asked Questions

1) What PEX tubing sizes do the Sioux Chief 640PX1 test plugs fit?
Three sizes cover the 640PX1 Series: 1/2 inch (640PX12), 3/4 inch (640PX13), and 1 inch (640PX14). Those are nominal PEX trade sizes, so you match the plug to the tubing size on the open run you are capping. A 1/2 inch plug will not hold in 3/4 inch tube, so on a mixed rough-in order all three sizes.
2) How does a PEX barb test plug seal the line, and does it need a crimp ring?
The 640PX1 plug uses a barbed profile that pushes into the inside of the PEX tubing and seals against the tube wall to hold test pressure. It is the same barb connection style as a standard PEX insert fitting, so on a rough-in where you are crimping or clamping every other barb joint, you would secure the plug the same way with the ring you are already using on that system.
3) Is a poly PEX test plug meant to stay in the line permanently?
No. These are temporary plugs. You cap the open end of a PEX run, pressure test for the rough-in inspection, then cut the plug off and make the permanent termination with a fitting, valve, or fixture stub. If you need a line left capped for good, use a permanent PEX cap fitting instead of a test plug.
4) Why choose a poly test plug instead of a brass one?
Poly is the economical, throwaway choice for a part you cut off after the inspection, and the molded poly resists corrosion and takes repeated jobsite handling. Brass makes sense when the fitting is staying in the wall. Since a 640PX1 plug is a test-and-cut part, the poly body does the job at lower cost per plug.
5) Can I use these plugs to pressure test a PEX manifold with multiple open branches?
Yes, that is a primary use. You plug each open branch leaving the manifold, then charge the system and check for leaks before trim-out. Match each plug to that branch's tube size, 1/2, 3/4, or 1 inch, since a manifold often feeds several sizes off one header.
6) Will these test plugs work on CPVC or copper stub-outs?
No. The 640PX1 is a PEX barb plug, sized and shaped to seat inside PEX tubing. CPVC and copper need their own caps, solvent weld or sweat/press respectively. Keep these for PEX runs only.
How fast can I get the Sioux Chief 640PX12 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Sioux Chief 640PX12 come with a warranty?
Absolutely. The Sioux Chief 640PX12 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Sioux Chief 640PX12?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the Sioux Chief 640PX12 from ZenSupply?
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