Sioux Chief 558-4 1" CTS Tube ...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$0.45
Sioux Chief 558-4 1" CTS Tube Insulator, Split Design

Sioux Chief 558-4 1" CTS Tube Insulator, Split Design

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Model: 558-4

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

$0.45
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Sioux Chief 558-4 1" CTS Tube Insulator, Split Design

The Sioux Chief 558-4 is a 1" CTS tube insulator designed for rough-in plumbing installations where copper, PEX, or CPVC tubing passes through metal or wood studs. This insulator snaps directly onto the tube with its split design, eliminating the need to thread the tube through the insulator during installation. Internal ribs allow the tube to expand and contract inside the wall cavity, reducing the ticking and knocking noise that occurs as supply lines heat and cool during normal use. The 558-4 is sized to fit both 1-11/32" and 1-3/8" holes, making it a versatile option for standard stud bore sizes found on most jobsites.

Key Features

  • Trade Size: 1" CTS (copper tube size) tube insulator for standard supply line runs.
  • Split Design: Snaps on over the tube after it is run, speeding up installation and avoiding the need to pre-thread the insulator before making connections.
  • Internal Ribs: Allow the tube to expand and contract within the insulator, quieting the thermal movement that otherwise transmits noise through studs and wall cavities.
  • Multi-Material Compatibility: Works with copper, PEX, or CPVC tube, so plumbers can standardize on one insulator across mixed piping jobs.
  • Stud Hole Fit: Fits both 1-11/32" and 1-3/8" holes bored in metal or wood studs, covering the two most common bore sizes on residential and light commercial framing.

Technical Specifications

  • Trade Size: 1" CTS
  • Compatible Tube Materials: Copper, PEX, CPVC
  • Stud Hole Sizes: 1-11/32" and 1-3/8"
  • Country of Origin: United States
  • Packaging: 250 EA per case

Typical Applications

  • Residential and Commercial Rough-In Plumbing
  • Copper, PEX, or CPVC Supply Line Installations Through Framing
  • Stud Bore Pass-Throughs in Metal or Wood Framing
  • Noise Reduction on Supply Lines Subject to Thermal Expansion
  • New Construction and Remodel Plumbing Rough-In

Why Sioux Chief?

Sioux Chief builds rough-in plumbing components, like the 558-4 tube insulator, around the practical needs of installing crews: a split design that snaps on without re-threading, internal ribs engineered to quiet tube movement, and a fit that matches common stud bore sizes. Manufactured in the United States, this insulator is a straightforward solution for reducing noise and protecting tubing where it passes through framing on copper, PEX, or CPVC supply runs.

Manufacturer Resources

Product Specs

Product Type:
Tube Insulator
Configuration:
Split Design
Country of Origin:
United States
Department:
Plumbing
Product Group:
Rough-In and Supports
Product Subgroup:
Hangers and Supports
Product Size:
1"

Sioux Chief 558-4 – Frequently Asked Questions

1) Will the Sioux Chief 558-4 insulator fit a 1-3/8 inch hole bored through a wood stud?
Yes. The 558-4 is sized for both 1-11/32 inch and 1-3/8 inch bores, which covers the two hole sizes most commonly drilled in wood or metal framing for a 1 inch supply run. If your crew drills either size, the same insulator works, so you are not sorting parts by bore diameter on the jobsite.
2) Does the 558-4 tube insulator work on PEX, or is it copper only?
It takes copper, PEX, or CPVC at 1 inch CTS. That means one insulator covers a mixed piping job rather than stocking a separate part per material. Note the sizing is copper tube size, so match it to your 1 inch CTS run.
3) Can I install a tube insulator after the supply line is already run?
That is the point of the split design on the Sioux Chief 558-4. It snaps on over the tube after the run is made, so there is no threading the insulator on before you solder or crimp connections. Useful on remodel work where you cannot slide a closed sleeve down the pipe.
4) What stops the ticking noise in the wall when hot water lines heat up?
The 558-4 has internal ribs that let the tube slide as it expands and contracts instead of binding against the stud bore. That thermal movement rubbing on framing is what makes the ticking and knocking you hear through a wall cavity. The insulator isolates the tube from the wood or steel so the movement does not transmit into the structure.
5) Is the Sioux Chief 558-4 a pipe hanger or just a sleeve through the stud?
It is an insulator sleeve for a stud bore pass-through, not a load-carrying hanger. It protects the tube where it crosses framing and quiets expansion noise, but it does not support the pipe run. You still need hangers or clamps spaced per your usual practice to carry the line.
6) How do Sioux Chief 558-4 insulators come packaged for a large rough-in job?
Case quantity is 250 each, which suits production framing and multi-family rough-in where every stud crossing on the supply runs gets one. Each insulator is model 558-4 for the 1 inch CTS size.
7) Are Sioux Chief 558-4 tube insulators made in the USA for a Buy American spec?
Country of origin on the 558-4 is the United States. If your project carries a domestic sourcing requirement on rough-in materials, that is the origin on record for this part.
How fast can I get the Sioux Chief 558-4 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 558-4 come with a warranty?
Absolutely. The Sioux Chief 558-4 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 558-4?
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 558-4 from ZenSupply?
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