CPVC pipe
CPVC is a chlorinated PVC piping material used where the selected system meets the fluid and temperature requirements.

Grey PVC-U pipe bundle. The photographed metric pipe is a family example; use the marked dimensional system when choosing pipe or fittings.
Open image at full size ↗ · Image sourcePiping materials · Plastic pipe
PVC-U pressure pipe is rigid unplasticised PVC used in compatible water and process pipework. It is joined using a matched pipe-and-fitting system.
Water transfer, treatment plant pipework and compatible chemical services.
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Product information
Use the dimension tables below to select a standard and size. Confirm material, tolerance and operating limits for the offered item.
Size reference
Choose a standard and size to check the reference dimensions. Use the measurements that match your existing part or project specification.
| Size | Outside Ø | Minimum wall | Reference average ID* |
|---|---|---|---|
| NPS 1/2 in | 21.336 | 2.7686 | 15.2908 |
| NPS 3/4 in | 26.67 | 2.8702 | 20.4216 |
| NPS 1 in | 33.401 | 3.3782 | 26.1366 |
| NPS 1 1/4 in | 42.164 | 3.556 | 34.544 |
| NPS 1 1/2 in | 48.26 | 3.683 | 40.386 |
| NPS 2 in | 60.325 | 3.9116 | 51.9938 |
| NPS 2 1/2 in | 73.025 | 5.1562 | 62.103 |
| NPS 3 in | 88.9 | 5.4864 | 77.2668 |
| NPS 3 1/2 in | 101.6 | 5.7404 | 89.4334 |
| NPS 4 in | 114.3 | 6.0198 | 101.5492 |
| NPS 5 in | 141.3002 | 6.5532 | 127.4064 |
| NPS 6 in | 168.275 | 7.112 | 153.1874 |
| NPS 8 in | 219.075 | 8.1788 | 201.7268 |
| NPS 10 in | 273.05 | 9.271 | 253.3904 |
| NPS 12 in | 323.85 | 10.3124 | 301.9806 |
IPS inch dimensions converted using 25.4 mm/inch. Average ID is a separate published reference, not OD minus twice minimum wall. Australian metric pipe uses a different dimensional system.
Common IPS nominal sizes ½–12 inches. OD/minimum wall and published average ID may come from separate technical tables; the offered product and tolerances must be confirmed. No pressure rating or stock availability is implied.
Reference checked September 2026. Final dimensions, tolerances, material and operating rating are confirmed for the offered item.
Choose the right variant
Positive-pressure ratings do not establish vacuum suitability. Confirm the complete assembly for the actual duty.
These details describe the product family. The offered item’s dimensions, materials, operating limits and required approvals are confirmed before you order.
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