Cantex® 1/2" to 2" PVC Schedule 40 Couplings

High Quality Schedule 40 PVC Couplers are Perfect for Less Than Ideal Conditions

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What's special about these pvc adapters?

  • Constructed of schedule 40 PVC, these couplings are perfect for placing your conduit underground for direct burial, or encasing it in concrete
  • Allows you to join together cut pieces of conduit with the use of solvent
  • Can be used without fear of deterioration above ground, even in direct sunlight; however it should not be exposed to physical damage
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ULCSA ApprovedCSA Approved

Cantex PVC Couplings can be used in conjunction with rigid non-metallic PVC to penetrate fire-walls and ceilings, but must be used with a firestop product to meet code.

CTX-6141623 Cantex® Rigid PVC Gray 1/2" Coupler
CTX-6141625 Cantex® Rigid PVC Gray 1" Coupler
CTX-6141627 Cantex® Rigid PVC Gray 1-1/2" Coupler

  • PVC conduit has an excellent range of temperatures, for versatility in many environments – it can be used from -4° to 122° F, and does not ignite until after 734° F
  • PVC is safe and easy to use
  • Meets all standards for: UL 651, NEMA TC-2 , NEMA TC-3 andNEC Article 352
  • CSA Certified
  • 1 year manufacturer’s warranty - PDF


Ideal for use with:

  • Electrical Non-Metallic Conduit


Schedule 40 couplings with center stop

cross section of coupling

CTX-6141623 1/2" 1-1/16" 1-1/2" 7/8" 5/8"
CTX-6141625 1" 1-5/8" 2" 1-5/16" 1"
CTX-6141627 1-1/2" 2-1/4" 2-3/8" 1-15/16" 1-1/8"


UL Standards UL 651
UL File E81590
UL Category Code DWTT
CSA Certified Yes
NEC Article 352  
Material Rigid PVC
Style Schedule 40


Cross Reference

Cantex Royal Carlon
1/2" 6141623 REC10 E940D
3/4" 6141624 REC15 E940E
1" 6141625 REC20 E940F
1-1/4" 6141626 REC25 E940G
1-1/2" 6141627 REC30 E940H
2" 6141628 REC35 E940J







Difference between Schedule 40 and Schedule 80 Conduit

The difference between Schedule 40 and Schedule 80 lies in the thickness of the wall of the piping. The Schedule 40 has a thinner wall than the Schedule 80 piping even when dealing with the same size pipe. Because the pipes are the same size on the outside, the difference lies in the interior. They will differ by inside diameter.
A 1" (25.4 mm) Schedule 40 pipe will have an outside diameter of 1.315" (33.4 mm) and an inside diameter of 1.029" (26.1 mm). A 1" (25.4 mm) Schedule 80 pipe will have an outside diameter of 1.315" (33.4 mm) and an inside diameter of 0.936" (23.8 mm).

They will look identical from the exterior. The reason for the difference is that thicker piping allows for larger pressure. Thinner piping and fittings however are less expensive typically.



Can you connect schedule 40 and schedule 80 2" and 4" PVC conduits together in a run? 
Schedule 40 and 80 can be connected with the use of couplings. The inside diameter of the spigot of the schedule 80 conduit should be reamed to allow a smooth transition from the 40 to the 80.

What is the burn time for the non-metallic or PVC conduit?
PVC Schedule 40 and Electrical Nonmetallic Tubing (ENT) do not have a "burn times". Both of these products have been evaluated and approved for use within a two-hour firewall assembly. Some would say the product has a "two hour rating".




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