Seamlessly connect two segments of PVC pipe to add length or breakdown points in PVC structures.

Add length to an existing piece of PVC pipe easily with the FORMUFIT Internal PVC Coupling. This coupling connects two Sch. 40 PVC pipe segments internally, with only a minuscule seam exposed. Internal Couplers are quintessential for breakpoints in larger applications and designs to help reduce transport size, or you can use them to create 10-foot lengths from our 40-inch or 60-inch PVC pipe segments without paying expensive freight.

internal pvc coupling furniture grade inner coupler pvc

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  • 1/2 in. Internal PVC Coupler, Furniture Grade - White
    Regular price
    $1.89
    Sale price
    $1.89
    Regular price
  • 1/2 in. Internal PVC Coupler, Furniture Grade - Black
    Regular price
    $2.39
    Sale price
    $2.39
    Regular price
  • 1/2 in. Internal PVC Coupler, Furniture Grade - Gray
    Regular price
    $2.39
    Sale price
    $2.39
    Regular price
  • 1/2 in. Internal PVC Coupler, Furniture Grade - Red
    Regular price
    $2.49
    Sale price
    $2.49
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  • 1/2 in. Internal PVC Coupler, Furniture Grade - Orange
    Regular price
    $2.49
    Sale price
    $2.49
    Regular price
  • 1/2 in. Internal PVC Coupler, Furniture Grade - Yellow
    Regular price
    $2.49
    Sale price
    $2.49
    Regular price
  • 1/2 in. Internal PVC Coupler, Furniture Grade - Green
    Regular price
    $2.49
    Sale price
    $2.49
    Regular price
  • 1/2 in. Internal PVC Coupler, Furniture Grade - Blue
    Regular price
    $2.19
    Sale price
    $2.19
    Regular price
  • 1/2 in. Internal PVC Coupler, Furniture Grade - Purple
    Regular price
    $2.49
    Sale price
    $2.49
    Regular price
  • 1/2 in. Internal PVC Coupler, Furniture Grade - Pink
    Regular price
    $2.49
    Sale price
    $2.49
    Regular price
  • 3/4 in. Internal PVC Coupler, Furniture Grade - White
    Regular price
    $2.29
    Sale price
    $2.29
    Regular price
  • 3/4 in. Internal PVC Coupler, Furniture Grade - Black
    Regular price
    $2.49
    Sale price
    $2.49
    Regular price
  • 3/4 in. Internal PVC Coupler, Furniture Grade - Gray
    Regular price
    $2.49
    Sale price
    $2.49
    Regular price
  • 3/4 in. Internal PVC Coupler, Furniture Grade - Red
    Regular price
    $2.79
    Sale price
    $2.79
    Regular price
  • 3/4 in. Internal PVC Coupler, Furniture Grade - Orange
    Regular price
    $2.79
    Sale price
    $2.79
    Regular price
  • 3/4 in. Internal PVC Coupler, Furniture Grade - Yellow
    Regular price
    $2.79
    Sale price
    $2.79
    Regular price
  • 3/4 in. Internal PVC Coupler, Furniture Grade - Green
    Regular price
    $2.79
    Sale price
    $2.79
    Regular price
  • 3/4 in. Internal PVC Coupler, Furniture Grade - Blue
    Regular price
    $2.79
    Sale price
    $2.79
    Regular price
  • 3/4 in. Internal PVC Coupler, Furniture Grade - Purple
    Regular price
    $2.79
    Sale price
    $2.79
    Regular price
  • 3/4 in. Internal PVC Coupler, Furniture Grade - Pink
    Regular price
    $2.79
    Sale price
    $2.79
    Regular price
  • 1 in. Internal PVC Coupler, Furniture Grade - White
    Regular price
    $2.39
    Sale price
    $2.39
    Regular price
  • 1 in. Internal PVC Coupler, Furniture Grade - Black
    Regular price
    $2.59
    Sale price
    $2.59
    Regular price
  • 1 in. Internal PVC Coupler, Furniture Grade - Gray
    Regular price
    $2.59
    Sale price
    $2.59
    Regular price
  • 1 in. Internal PVC Coupler, Furniture Grade - Red
    Regular price
    $2.89
    Sale price
    $2.89
    Regular price
  • 1 in. Internal PVC Coupler, Furniture Grade - Orange
    Regular price
    $2.89
    Sale price
    $2.89
    Regular price
  • 1 in. Internal PVC Coupler, Furniture Grade - Yellow
    Regular price
    $2.89
    Sale price
    $2.89
    Regular price
  • 1 in. Internal PVC Coupler, Furniture Grade - Green
    Regular price
    $2.89
    Sale price
    $2.89
    Regular price
  • 1 in. Internal PVC Coupler, Furniture Grade - Blue
    Regular price
    $2.89
    Sale price
    $2.89
    Regular price
  • 1 in. Internal PVC Coupler, Furniture Grade - Purple
    Regular price
    $2.89
    Sale price
    $2.89
    Regular price
  • 1 in. Internal PVC Coupler, Furniture Grade - Pink
    Regular price
    $2.89
    Sale price
    $2.89
    Regular price
  • 1-1/4 in. Internal PVC Coupler, Furniture Grade - White
    Regular price
    $2.49
    Sale price
    $2.49
    Regular price
  • 1-1/4 in. Internal PVC Coupler, Furniture Grade - Black
    Regular price
    $3.29
    Sale price
    $3.29
    Regular price
  • 1-1/4 in. Internal PVC Coupler, Furniture Grade - Gray
    Regular price
    $3.29
    Sale price
    $3.29
    Regular price
  • 1-1/4 in. Internal PVC Coupler, Furniture Grade - Red
    Regular price
    $3.29
    Sale price
    $3.29
    Regular price
  • 1-1/4 in. Internal PVC Coupler, Furniture Grade - Orange
    Regular price
    $3.29
    Sale price
    $3.29
    Regular price
  • 1-1/4 in. Internal PVC Coupler, Furniture Grade - Yellow
    Regular price
    $3.29
    Sale price
    $3.29
    Regular price
  • 1-1/4 in. Internal PVC Coupler, Furniture Grade - Green
    Regular price
    $3.29
    Sale price
    $3.29
    Regular price
  • 1-1/4 in. Internal PVC Coupler, Furniture Grade - Blue
    Regular price
    $3.29
    Sale price
    $3.29
    Regular price
  • 1-1/4 in. Internal PVC Coupler, Furniture Grade - Purple
    Regular price
    $3.29
    Sale price
    $3.29
    Regular price
  • 1-1/4 in. Internal PVC Coupler, Furniture Grade - Pink
    Regular price
    $3.29
    Sale price
    $3.29
    Regular price
Product Details

General Details

internal pvc coupling furniture grade inner coupler pvc

Internal PVC couplings are PVC couplers that are inserted between two PVC pipes to create a seamless connection and lengthen the PVC pipe. Ideal for creating longer lengths of PVC pipe, these are ideal for when standard 40" or 60" pipe lengths are just not long enough. These couplings feature an internal fit male socket for securing pipe connections. Internal Couplers are pass-through, so cabling, wiring, and fluids can still be sent down the pipe. PVC cement is recommended for a secure bond between the pipes and coupling.

Design
The Internal Coupler has a 'flower' socket design that will accommodate the variations that frequent inner diameters of PVC pipe. This allows some flexibility if the pipe happens to have a smaller inner diameter. In most cases, the coupler has an extremely tight tolerance for connection.
Materials
Made from premium Structural Grade PVC resins, the internal coupler style and colors match perfectly with FORMUFIT PVC pipe, so connections appear virtually seamless. Couplers are UV-resistant and impact-proof to take the same impacts as all other FORMUFIT PVC products.
Product Use
Internal Couplers are perfect for lengthening pipe length past their original size. They are also excellent for making breakdown points in PVC pipe structures.
Securing
To secure it in place, insert the Internal Coupler at a slight angle and insert the insert fully, straight on. Tolerances are usually close enough that you don't need PVC cement, but they can be permanently bonded using PVC solvents for a complete fit.
Product Instructions

Internal Coupling Product Manual

You can view the generalized product instructions for this category by clicking the Download PDF button. Individual instructions are also on each product detail page.

Download Manual

Click the button below to download the step-by-step product instructions for the FORMUFIT Internal Coupling. You may need Adobe™ Acrobat Reader to view the PDF document on your computer or device.