Schedule 40 PVC Pipe Dimensions Chart

Schedule 40 Pipe Data

PVC Pipe is identified by the ID (Inside Diameter) and is referred to as a “nominal” size which means “in name only.” However this confuses people and most novices try to use the OD (Outer Diameter) to order parts. If you do this, measure the OD of your pipe and find it the 2nd column of the chart below.

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Schedule 40 PVC Pipe Dimensions Chart

PVC Schedule 40 Sizes Table

For regular schedule 40 PVC pipe, the title 1″, for instance, means that the inner diameter (ID) is 1″. The pipe walls themselves have a thickness, though. The OD of 1″ PVC pipe is 1.315″. Schedule 80 PVC pipe has thicker walls than schedule 40, but still has the same OD.

The actual exterior diameter of a 1-1/2 inch PVC pipe is not 1-1/2 inches, but rather 1.90 inches (4.83 cm).

Schedule 120 pipes are the thickest commonly available PVC pipes and are available in fewer sizes than the schedule 40 or 80 pipes. These pipes allow for the most pressure out of the three. They are available from 1/2 inch to 8 inches. The wall thickness varies from 0.360 inch to 1.436 inches.

PVC pipe is a type of plastic plumbing pipe primarily used to transport high pressured water. It is available in several standard sizes, ranging from ½ inch (1.3 centimeters) to 4 inches (10.2 centimeters) in diameter.