Sioux Chief 685-C CPVC x Coppe...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$13.74
Sioux Chief 685-C CPVC x Copper Press-Fit Transition Fitting

Sioux Chief 685-C CPVC x Copper Press-Fit Transition Fitting

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Model: 685-C4

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

$13.74
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Sioux Chief 685-C CPVC x Copper Press-Fit Transition Fitting

The Sioux Chief 685-C is a CPVC x copper transition fitting designed to join CPVC piping to a plain copper end that accepts a standard press-fitting tool connection, available in 1" and 1-1/4" sizes to match standard copper tube size (CTS) rough-in requirements. This fitting provides a mechanical-only connection — no soldering, heat, or cutting is required or permitted on the copper press end. The CPVC resin used in this fitting has been tested and is monitored on an ongoing basis to assure chemical compatibility with FlowGuard Gold®, BlazeMaster® and Corzan® piping systems, as well as products made with TempRite® Technology. This makes the 685-C a reliable rough-in choice for plumbers transitioning between CPVC and copper tube systems using press technology rather than solvent welding or sweat soldering, and it supports both residential rough-in work and fire-protection piping applications where branded CPVC systems are specified.

Key Features

  • Trade Size: Available in 1" and 1-1/4" CPVC x copper configurations for standard copper tube size (CTS) transitions.
  • Material Compatibility: CPVC resin engineered for chemical compatibility with FlowGuard Gold®, BlazeMaster®, and Corzan® piping systems and products made with TempRite® Technology.
  • Press-Fit Compatible: Plain copper end is compatible with standard press-fitting tools for a clean mechanical connection.
  • Mechanical Connection Only: No soldering, sweating, or heat application required on the copper press end, simplifying rough-in installation.
  • Warranty Note: Applying heat or cutting this fitting voids the manufacturer warranty — install as supplied without modification.
  • Packaging: Supplied 20 EA per pack for rough-in stocking and job-site inventory, across both available sizes.

Technical Specifications

  • Country of Origin: USA
  • Packaging: 20 EA
  • Available Sizes: 1", 1-1/4"

Typical Applications

  • Transitioning CPVC supply lines to copper tube fittings or valves
  • Residential and commercial rough-in plumbing where mixed-material runs are required
  • Retrofit and repair work connecting existing copper stub-outs to new CPVC branch lines
  • Press-fit installations where soldering is not practical or permitted on the copper connection
  • Fire-protection and process piping systems using BlazeMaster® or Corzan® CPVC

Why Sioux Chief?

Sioux Chief manufactures the 685-C transition fitting line with CPVC resin that is tested and continuously monitored for compatibility with major branded CPVC piping systems, giving contractors confidence when bridging CPVC and copper tube on the same run in either the 1" or 1-1/4" size. The mechanical, press-fit copper end eliminates the need for open flame or solvent cement at the transition point, simplifying rough-in work while preserving the fitting's warranty when installed as directed. Packaged 20 EA per case, the 685-C series is built for the volume demands of professional plumbing rough-in and stocked for both residential and commercial job sites.

Manufacturer Resources

Spec Sheet

Product Specs

Product Type:
Transition Fitting
Connection Type:
Press-Fit
Country of Origin:
United States
Department:
Plumbing
Product Group:
Rough-In and Supports
Product Subgroup:
Fittings and Valves
Product Material:
CPVC
Product Size:
1"

Sioux Chief 685-C4 – Frequently Asked Questions

1) Can I solder the copper end of a Sioux Chief 685-C transition fitting?
No. The copper end on the 685-C is a plain press end meant for a standard press-fitting tool only. Soldering, sweating, or any heat on the fitting is not permitted, and cutting or heating it voids the manufacturer's coverage. Install it as supplied, unmodified. If your copper connection has to be sweated, this is the wrong fitting for that joint.
2) Is this fitting compatible with FlowGuard Gold or BlazeMaster CPVC?
Yes. The CPVC resin in the 685-C is tested and monitored on an ongoing basis for chemical compatibility with FlowGuard Gold, BlazeMaster and Corzan piping systems, and with products made using TempRite Technology. That covers potable rough-in with FlowGuard Gold, fire-protection branch lines with BlazeMaster, and industrial or process runs with Corzan.
3) Can I use the 685-C to tie new CPVC into an existing copper stub-out?
Yes, that is one of its intended uses. The copper end presses onto the existing copper tube with a standard press tool and the CPVC end picks up the new branch, which is why it suits retrofit and repair work where you cannot get the line dry enough for solder. Match the fitting to your copper tube size, 1 inch or 1-1/4 inch CTS.
4) How does the CPVC side of the 685-C connect to my pipe?
The 685-C is a CPVC x copper transition: the CPVC socket side joins to your CPVC pipe, and the copper side is pressed. So on one joint you are working in CPVC and on the other you are pressing with a standard press tool, with no open flame at the transition point.
5) Should I use a press transition fitting or a solvent-weld/threaded CPVC to copper adapter?
Pick the 685-C press version when the copper side of the joint has to be mechanical, for example hot-work restrictions on an occupied building, a tight ceiling space, or a stub-out you cannot drain enough to solder. If the copper side will be sweated or threaded anyway, use a sweat or threaded CPVC transition instead, because heating the 685-C is not allowed and voids coverage.
6) How many Sioux Chief 685-C fittings come in a pack?
Supplied 20 each per pack, in both the 1 inch and 1-1/4 inch sizes. That is case-quantity stocking for rough-in work rather than a single-piece repair purchase, so plan on the full 20 when you order either size.
7) Where is the Sioux Chief 685-C made?
The 685-C transition fitting is made in the United States, which matters on public and institutional jobs carrying domestic-sourcing requirements in the spec.
How fast can I get the Sioux Chief 685-C4 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 685-C4 come with a warranty?
Absolutely. The Sioux Chief 685-C4 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 685-C4?
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 685-C4 from ZenSupply?
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