Ocal CPL4-G PVC-Coated Steel C...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$138.56
Ocal CPL4-G PVC-Coated Steel Conduit Coupling, 4-Inch, Gray

Ocal CPL4-G PVC-Coated Steel Conduit Coupling, 4-Inch, Gray

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Model: CPL4-G

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

$138.56
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Ocal CPL4-G PVC-Coated Steel Conduit Coupling, 4-Inch, Gray

The Ocal CPL4-G is a 4-inch steel conduit coupling with a PVC coating in gray, engineered to join sections of rigid metal conduit while providing corrosion protection in harsh or corrosive environments. Built on a steel body for strength, this coupling is designed for use in industrial and commercial electrical raceway systems where standard uncoated fittings would be vulnerable to chemical exposure, moisture, or outdoor weathering. The 4-inch trade size matches standard rigid conduit runs, making it a straightforward drop-in solution for extending or repairing conduit lines.

Key Features

  • Trade Size: 4-inch coupling sized to join standard 4-inch rigid conduit runs.
  • Durable Construction: Steel body construction provides strength and durability for demanding conduit installations.
  • PVC Coating: A PVC exterior coating adds an extra layer of corrosion resistance, extending service life in wet, chemical, or corrosive environments where bare steel would degrade.
  • Coupling Configuration: Straight coupling design allows two lengths of conduit to be joined in-line, maintaining a continuous, protected raceway for conductors.
  • Finish: Gray PVC coating for a consistent, corrosion-resistant appearance that is easy to identify on the jobsite.

Technical Specifications

  • Product Type: Conduit Coupling
  • Trade Size: 4-Inch
  • Material: Steel with PVC Coating
  • Color/Finish: Gray

Typical Applications

  • Rigid Conduit Raceway Systems
  • Corrosive or Chemical-Exposure Environments
  • Industrial and Commercial Electrical Installations
  • Outdoor and Wet-Location Conduit Runs
  • Conduit Extension and Repair Work

Why Ocal?

Ocal builds its PVC-coated steel conduit fittings for the demanding conditions where standard steel fittings fail prematurely, pairing a robust steel body with a protective PVC exterior coating for long-term corrosion resistance. The CPL4-G coupling delivers the strength of steel construction with added protection for reliable, code-compliant conduit connections in tough industrial and corrosive settings.

Manufacturer Resources

Product Specs

list_batch:
OCL-20260929
Product Type:
Conduit Coupling
Product Finish:
PVC-Coated
Department:
Electrical
Product Subgroup:
Conduit Fittings
Product Material:
Steel
Product Color:
Gray
Product Size:
4-Inch
Product Group:
Conduit & Raceway

Ocal CPL4-G – Frequently Asked Questions

1) Will the Ocal CPL4-G coupling join two runs of 4-inch rigid metal conduit?
That is exactly what it does. The CPL4-G is a straight coupling in the 4-inch trade size, so it joins two lengths of standard 4-inch rigid metal conduit in-line and keeps the raceway continuous for the conductors. It is not a reducing or offset fitting, so both ends take 4-inch conduit.
2) Why pay for a PVC-coated coupling instead of a plain galvanized rigid coupling?
The reason is the environment, not the connection. The CPL4-G is a steel coupling with a PVC exterior coating, and that coating is what keeps it alive in wet, chemically exposed, or outdoor locations where bare steel corrodes and seizes. On a dry indoor run, the coating buys you nothing. On a wastewater plant, a chemical process area, a parking structure, or a coastal exterior run, it is the difference between a fitting you can break loose in ten years and one you cut out.
3) What is the difference between the Ocal CPL4-G coupling and the SEPCO NTCC compression coupling?
The Ocal CPL4-G is a 4-inch steel conduit coupling with a gray PVC coating, used to join rigid conduit sections where corrosion protection is needed. The SEPCO NTCC series coupling is a compression-style conduit coupling with a malleable iron body. So the two differ in both body material and connection method: the CPL4-G is a threaded-style PVC-coated steel coupling for rigid metal conduit runs, while the NTCC uses a compression connection on a malleable iron body with no PVC jacket called out.
4) I only need to join metallic conduit indoors with no corrosion exposure - is there a simpler coupling than the Ocal CPL4-G?
Yes. The Ocal CPL4-G carries a gray PVC exterior coating specifically for wet, chemical, and corrosive environments where bare steel would degrade, which is protection you are paying for and will not use in a dry interior run. For plain metallic conduit joining, the nVent CADDY ERC 2G9S10WB twist coupling for metallic conduit is the simpler option and comes in a pack of 100 for repetitive work. Keep the CPL4-G where the raceway sees outdoor weathering or chemical exposure.
5) What is the exact part number to order the Ocal 4-inch PVC-coated coupling?
Order it as Ocal CPL4-G. The CPL prefix is the straight coupling, the 4 is the trade size, and the G is the gray PVC coating. There is a single configuration, so there is no finish or length option to specify on top of the part number.
6) Can I use this coupling to repair an existing conduit run, or is it only for new work?
Repair and extension work is one of its stated uses. Since it is a threaded straight coupling in the 4-inch size, you can thread it onto a cut and re-threaded end to splice or extend an existing rigid run. One caution on PVC-coated systems: when you cut into coated conduit, the exposed threads and any coating nicks need touch-up compound, or you have created the corrosion start point the coating was there to prevent.
7) How is the Ocal CPL4-G different from a compression or twist coupling like the SEPCO NTCC or nVent CADDY ERC?
Different job entirely. The Ocal CPL4-G is a PVC-coated steel coupling for 4-inch rigid metal conduit in corrosive and wet locations. The SEPCO NTCC Series is a compression coupling with a malleable iron body, and the nVent CADDY ERC 2G9S10WB is a twist coupling for metallic conduit sold 100 to a pack, which points at high-volume smaller-diameter work rather than large rigid runs. If your spec calls for PVC-coated rigid, neither of those substitutes for the Ocal.
8) Is a PVC-coated steel coupling still part of the equipment grounding path?
Yes. The CPL4-G has a steel body, and the PVC layer is an exterior coating over that steel, so the metal-to-metal threaded connection between conduit sections is maintained the same way an uncoated rigid coupling maintains it. The coating does not sit in the thread path between the conduit and the coupling body.
9) Can I use an nVent CADDY ERC twist coupling in place of an Ocal CPL4-G on a corrosive outdoor run?
No - treat those as different products. The nVent CADDY ERC 2G9S10WB is a twist coupling for metallic conduit sold in packs of 100, with no PVC coating in its description. The Ocal CPL4-G is steel with a gray PVC coating and is built for corrosion-protected connections between conduit sections in wet, outdoor, and chemical-exposure locations. If the specification calls for a PVC-coated raceway system, the ERC twist coupling does not substitute for it.
10) Will the gray Ocal coupling match the gray PVC-coated conduit already on my job?
The CPL4-G is coated in gray, which is the standard Ocal PVC-coat color, so it reads the same as gray PVC-coated rigid conduit and fittings already in the run. If your existing system is a different coat color, the body and threads are still the same steel rigid conduit connection, only the appearance differs.
How fast can I get the Ocal CPL4-G 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 Ocal CPL4-G come with a warranty?
Absolutely. The Ocal CPL4-G 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 Ocal CPL4-G?
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 Ocal CPL4-G from ZenSupply?
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