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1-1/4" Compression Coupling
Features
- Heavy steel walls
- Zinc plated to prevent corrosion
- Concrete tight
Manufacturer Resources
Product Specs
- Department:
- Electrical
- Product Group:
- Conduit & Raceway
- Product Subgroup:
- Conduit Fittings
- Product Type:
- Conduit Coupling
Allied Tube & Conduit CK125RKON – Frequently Asked Questions
1) What size EMT does the Allied Tube & Conduit CK125RKON compression coupling fit?
The CK125RKON is a 1-1/4 inch compression coupling, so it joins two runs of 1-1/4 inch conduit. Compression fittings tighten onto the tube with a gland nut, so no threading of the conduit is needed.
2) Can a compression coupling like the CK125RKON be used in a concrete pour?
Yes. The CK125RKON is rated concrete tight, so it can be embedded in a poured slab or wall without wet concrete entering the raceway. Set screw couplings are not concrete tight and should not be substituted in a pour.
3) Compression coupling or set screw coupling for 1-1/4 inch conduit?
Use compression, like the CK125RKON, where the fitting is going into concrete or a damp location, since it is concrete tight. Set screw couplings are the cheaper indoor dry-location choice and install faster, but they do not seal. For a run being poured into a slab or run outdoors under a raintight requirement, compression is the correct type.
4) Do I need any extra parts to install the CK125RKON coupling?
No separate hardware is needed. A compression coupling ships with its compression nuts and rings in place; you cut and ream the conduit ends, slide them in, and tighten the nuts with a wrench. Each coupling joins one pair of 1-1/4 inch conduit ends, so count one per splice point when ordering.
5) Will a zinc plated steel conduit coupling hold up in a damp mechanical room or parking garage?
The CK125RKON has heavy steel walls and is zinc plated to resist corrosion, which is the standard finish for interior and covered exterior EMT work. For continuously wet or corrosive process areas, a stainless or PVC-coated fitting is the usual specification.
6) Is the CK125RKON a straight coupling or a reducing fitting?
It is a straight 1-1/4 inch to 1-1/4 inch coupling, both ends the same size. To step between trade sizes you need a reducing fitting or a reducing bushing at a box, not this part.
How fast can I get the Allied Tube & Conduit CK125RKON 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 Allied Tube & Conduit CK125RKON come with a warranty?
Absolutely. The Allied Tube & Conduit CK125RKON 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 Allied Tube & Conduit CK125RKON?
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 Allied Tube & Conduit CK125RKON from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support,
and
rewards on
every order.
Our team is always ready to help you choose the right product for your project.