Internal PVC Coupling

Add length to an existing piece of PVC pipe easily with the FORMUFIT Internal 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.

Available Sizes

FORMUFIT PVC External Couplers are available to buy online in the 1/2", 3/4", 1", 1-1/4" PVC Sizes and fit standard Schedule 40 PVC size pipe only. For sizing information, please see our PVC 101 page.

1/2 in. Internal Furniture Grade PVC Coupling - White - FORMUFIT

$1.89

FORMUFIT 1/2" Internal Couplings in White connect two segments of 1/2 in. Schedule 40 PVC pipes internally, leaving a smooth, flush, and hidden connection. The best answer for when you need to exte...

1/2 in. Internal Furniture Grade PVC Coupling - Black - FORMUFIT

$2.39

FORMUFIT 1/2" Internal Couplings in Black connect two segments of 1/2 in. Schedule 40 PVC pipes internally, leaving a smooth, flush, and hidden connection. The best answer for when you need to exte...

1/2 in. Internal Furniture Grade PVC Coupling - Gray - FORMUFIT

$2.39

FORMUFIT 1/2" Internal Couplings in Gray connect two segments of 1/2 in. Schedule 40 PVC pipes internally, leaving a smooth, flush, and hidden connection. The best answer for when you need to exten...

1/2 in. Internal Furniture Grade PVC Coupling - Red - FORMUFIT

$2.49

FORMUFIT 1/2" Internal Couplings in Red connect two segments of 1/2 in. Schedule 40 PVC pipes internally, leaving a smooth, flush, and hidden connection. The best answer for when you need to extend...

1/2 in. Internal Furniture Grade PVC Coupling - Orange - FORMUFIT

$2.49

FORMUFIT 1/2" Internal Couplings in Orange connect two segments of 1/2 in. Schedule 40 PVC pipes internally, leaving a smooth, flush, and hidden connection. The best answer for when you need to ext...

1/2 in. Internal Furniture Grade PVC Coupling - Yellow - FORMUFIT

$2.49

FORMUFIT 1/2" Internal Couplings in Yellow connect two segments of 1/2 in. Schedule 40 PVC pipes internally, leaving a smooth, flush, and hidden connection. The best answer for when you need to ext...

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1/2 in. Internal Furniture Grade PVC Coupling - Green - FORMUFIT

$2.49

FORMUFIT 1/2" Internal Couplings in Green connect two segments of 1/2 in. Schedule 40 PVC pipes internally, leaving a smooth, flush, and hidden connection. The best answer for when you need to exte...

1/2 in. Internal Furniture Grade PVC Coupling - Blue - FORMUFIT

$2.19

FORMUFIT 1/2" Internal Couplings in Blue connect two segments of 1/2 in. Schedule 40 PVC pipes internally, leaving a smooth, flush, and hidden connection. The best answer for when you need to exten...

1/2 in. Internal Furniture Grade PVC Coupling - Purple - FORMUFIT

$2.49

FORMUFIT 1/2" Internal Couplings in Purple connect two segments of 1/2 in. Schedule 40 PVC pipes internally, leaving a smooth, flush, and hidden connection. The best answer for when you need to ext...

1/2 in. Internal Furniture Grade PVC Coupling - Pink - FORMUFIT

$2.49

FORMUFIT 1/2" Internal Couplings in Pink connect two segments of 1/2 in. Schedule 40 PVC pipes internally, leaving a smooth, flush, and hidden connection. The best answer for when you need to exten...

3/4 in. Internal Furniture Grade PVC Coupling - White - FORMUFIT

$2.29

FORMUFIT 3/4" Internal Couplings in White connect two segments of 3/4 in. Schedule 40 PVC pipes internally, leaving a smooth, flush, and hidden connection. The best answer for when you need to exte...

3/4 in. Internal Furniture Grade PVC Coupling - Black - FORMUFIT

$2.49

FORMUFIT 3/4" Internal Couplings in Black connect two segments of 3/4 in. Schedule 40 PVC pipes internally, leaving a smooth, flush, and hidden connection. The best answer for when you need to exte...

3/4 in. Internal Furniture Grade PVC Coupling - Gray - FORMUFIT

$2.49

FORMUFIT 3/4" Internal Couplings in Gray connect two segments of 3/4 in. Schedule 40 PVC pipes internally, leaving a smooth, flush, and hidden connection. The best answer for when you need to exten...

3/4 in. Internal Furniture Grade PVC Coupling - Red - FORMUFIT

$2.79

FORMUFIT 3/4" Internal Couplings in Red connect two segments of 3/4 in. Schedule 40 PVC pipes internally, leaving a smooth, flush, and hidden connection. The best answer for when you need to extend...

3/4 in. Internal Furniture Grade PVC Coupling - Orange - FORMUFIT

$2.79

FORMUFIT 3/4" Internal Couplings in Orange connect two segments of 3/4 in. Schedule 40 PVC pipes internally, leaving a smooth, flush, and hidden connection. The best answer for when you need to ext...

3/4 in. Internal Furniture Grade PVC Coupling - Yellow - FORMUFIT

$2.79

FORMUFIT 3/4" Internal Couplings in Yellow connect two segments of 3/4 in. Schedule 40 PVC pipes internally, leaving a smooth, flush, and hidden connection. The best answer for when you need to ext...

3/4 in. Internal Furniture Grade PVC Coupling - Green - FORMUFIT

$2.79

FORMUFIT 3/4" Internal Couplings in Green connect two segments of 3/4 in. Schedule 40 PVC pipes internally, leaving a smooth, flush, and hidden connection. The best answer for when you need to exte...

3/4 in. Internal Furniture Grade PVC Coupling - Blue - FORMUFIT

$2.79

FORMUFIT 3/4" Internal Couplings in Blue connect two segments of 3/4 in. Schedule 40 PVC pipes internally, leaving a smooth, flush, and hidden connection. The best answer for when you need to exten...

Product Manual

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

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Additional Information

Internal PVC Coupling

Product Manual

Internal PVC Coupler - Additional Information

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