Sioux Chief 641WG444 1" x 1" x...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$36.72
Sioux Chief 641WG444 1" x 1" x 1" No-Lead PEX Tee, F1960 Expansion Brass Fitting

Sioux Chief 641WG444 1" x 1" x 1" No-Lead PEX Tee, F1960 Expansion Brass Fitting

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Model: 641WG444

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

$36.72
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Sioux Chief 641WG444 1" x 1" x 1" No-Lead PEX Tee, F1960 Expansion Brass Fitting

The Sioux Chief 641WG444 is a one-piece no-lead brass tee sized 1" x 1" x 1" and built for the F1960 expansion PEX connection method used throughout rough-in water distribution work. Plumbers and contractors rely on this fitting to branch a line without restricting flow, since the one-piece brass body is engineered for full flow with no internal restriction at the joint. As a no-lead brass fitting intended for behind-the-wall and under-floor PEX runs, it is a straightforward, code-relevant choice for new construction and remodel rough-in where expansion-style PEX connections are already in use.

Key Features

  • Trade Size: 1" x 1" x 1" tee configuration for branching equal-diameter PEX tubing runs.
  • Durable Construction: One-piece no-lead brass body resists corrosion and holds up to repeated expansion-ring installation cycles.
  • Connection Type: F1960 expansion connection system, matched to F1960 expansion PEX rings and tooling for a secure, full-flow joint.
  • Full Flow Design: One-piece construction eliminates the internal restriction found in some multi-part tees, maintaining flow through the branch and run.
  • No-Lead Compliant: Manufactured as a no-lead brass fitting for potable water rough-in applications.

Technical Specifications

  • Country of Origin: United States
  • Cubic Volume: 0.18735416
  • Packaging: 20 EA per pack
  • Connection Standard: ASTM F1960 expansion PEX
  • Material: No-Lead Brass

Typical Applications

  • Residential Potable Water Rough-In
  • Commercial PEX Water Distribution Branching
  • New Construction Supply Line Installation
  • Remodel and Repair of Existing F1960 PEX Systems
  • Behind-the-Wall and Under-Floor Plumbing Runs

Why Sioux Chief?

Sioux Chief builds this tee as a one-piece no-lead brass fitting specifically for the F1960 expansion connection system, giving installers a full-flow branch fitting without the restriction common to multi-piece designs. Manufactured in the United States, it's a dependable component for plumbers standardizing on expansion-style PEX throughout a rough-in job. Prop 65 WARNING applies to this product per California requirements.

Manufacturer Resources

Spec Sheet

Product Specs

Product Type:
Tee
Connection Type:
F1960 Expansion
Standards:
No-Lead
Country of Origin:
United States
Department:
Plumbing
Product Group:
Rough-In and Supports
Product Subgroup:
Fittings and Valves
Product Material:
Brass
Product Size:
1" x 1" x 1"

Sioux Chief 641WG444 – Frequently Asked Questions

1) Will the Sioux Chief 641WG444 PEX tee work with crimp rings or press fittings?
No. The 641WG444 is built for the ASTM F1960 expansion connection method only, meaning it needs F1960 expansion rings and an expansion tool. It will not accept copper crimp rings, stainless cinch clamps, or press jaws. If your job is crimped or clamped PEX, you need a crimp-style brass tee instead.
2) What size PEX does the Sioux Chief 641WG444 tee take on each port?
All three ports are 1 inch, so it branches a 1 inch run into a 1 inch branch with no reduction. For a smaller branch off a 1 inch main you need a reducing tee, not this one.
3) Is this PEX tee safe for potable drinking water lines?
The 641WG444 is a no-lead brass fitting made for potable water rough-in, residential and commercial alike. It's used for behind-the-wall and under-floor water distribution branching.
4) Does a brass expansion tee restrict flow the way some multi-piece fittings do?
The body is one-piece no-lead brass with no internal restriction at the joint, so flow is maintained through both the run and the branch. That's the practical difference from multi-part tee designs where the assembly necks down the waterway.
5) Is the Sioux Chief 641WG444 made in the USA?
Yes, country of origin is the United States, which matters on public and institutional jobs carrying domestic-sourcing requirements.
6) Can I use this tee to repair an existing Uponor-style expansion PEX system?
If the existing system was installed with F1960 expansion rings, the 641WG444 is a matching 1 inch branch fitting for remodel and repair work on that system. It is sold as an F1960 expansion fitting, so confirm the rings on the lines you're tying into are expansion rings and not crimp.
7) What else do I need to install the 641WG444 besides the tee itself?
Three F1960 expansion rings, one per port, plus an expansion tool with a 1 inch head. The brass body is rated for repeated expansion-ring installation cycles, so it tolerates rework if a joint has to be redone.
8) How many Sioux Chief 641WG444 tees come in a pack?
They're packaged 20 each per pack, which is how most plumbers buy them for a multi-unit or new-construction rough-in rather than a one-off repair.
9) What is the manufacturer part number to order this 1 inch PEX tee?
Sioux Chief part number 641WG444, a 1 inch by 1 inch by 1 inch no-lead brass F1960 expansion tee.
How fast can I get the Sioux Chief 641WG444 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 641WG444 come with a warranty?
Absolutely. The Sioux Chief 641WG444 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 641WG444?
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 641WG444 from ZenSupply?
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