Dimensions / Building materials / PVC pipe / Schedule 40 PVC
Schedule 40 PVC is the thinner of the two ASTM D1785 walls: 2 in Sch 40 is 2.375 in (60.3 mm) outside with a 0.154 in minimum wall, a 2.047 in average ID, 280 psi at 73 °F and 69.5 lb per 100 ft (Charlotte, IPEX). The rating falls as the size grows, from 600 psi at 1/2 in to 180 psi at 6 in, and with heat: × 0.62 at 100 °F and × 0.22 at 140 °F, the limit. It is usually white, sold in 10 and 20 ft, plain or belled (a 2 in bell is 4.00 in deep), often dual-marked for pressure and DWV, and it is not threaded. Its D2466 fittings have 1.156 in sockets at 2 in, against 1.500 in for Sch 80.
| OD (2 in) | Minimum wall | Rated at 73 °F |
|---|---|---|
| 2.375in60.3 mm | 0.154in3.91 mm | 280psi |
Sources: Charlotte Pipe. Checked October 2026.
A 100 ft run of 2 in belled pipe carrying 150 psi of 100 °F water, and a length measured at the yard, are filled in; change the size, run, temperature or your readings and the three checks follow.
Only the temperatures the makers tabulate are offered; for water in between, take the hotter one. Weights are Charlotte’s, per 100 ft as sold.
Each 20 ft length of belled 2 in Sch 40 loses 4 in inside the bell it fits into, so it adds 236 in: 100 ft takes 6 lengths and 5 joints; you have 6. At 69.5 lb per 100 ft they weigh 83.4 lb.
Charlotte’s 2 in belled pipe is 20 ft with a 4.00 in bell, so each length adds 236 in.
2 in Sch 40 is rated 280 psi at 73 °F; at 100 °F the factor is 0.62, so 173.6 psi, enough for your 150 psi. Charlotte rates its fittings at 60% of the pipe, so with them the system holds 104.2 psi.
2 in Sch 40 is 280 psi at 73 °F; at 100 °F the makers’ factor is 0.62.
2 in Sch 40: outside diameter 2.375 ± 0.006 in, so 2.369–2.381; wall at least 0.154 in and at most 0.174. Your 2.377 in and 0.16 in are within both.
Spears gives 2 in pipe ±0.006 in on the outside diameter; Rain Bird adds 0.020 in to the 0.154 in wall.
Selling Schedule 40? Photograph a pipe end with its print line, mark size, wall, rating and the bell in SizeMarker, and add the picture to your offer.
Mark a photoOutside diameter, minimum wall, rating and weight per 100 ft from Charlotte; average ID from IPEX Table A-14 (JM Eagle’s nominal ID at 12 in).
| Size | OD; minimum wall | Average ID | Rated at 73 °F | lb per 100 ft |
|---|---|---|---|---|
| 1/2 in | 0.840 in; 0.109 in | 0.602 in | 600 psi | 15.9 |
| 3/4 in | 1.050 in; 0.113 in | 0.804 in | 480 psi | 21.1 |
| 1 in | 1.315 in; 0.133 in | 1.029 in | 450 psi | 31.3 |
| 1-1/4 in | 1.660 in; 0.140 in | 1.360 in | 370 psi | 42.4 |
| 1-1/2 in | 1.900 in; 0.145 in | 1.590 in | 330 psi | 51.8 |
| 2 inThis page | 2.375 in (60.3 mm); 0.154 in (3.91 mm) | 2.047 in | 280 psi | 69.5 |
| 2-1/2 inRated higher than 2 in | 2.875 in; 0.203 in | 2.445 in | 300 psi | 110.0 |
| 3 in | 3.500 in; 0.216 in | 3.042 in | 260 psi | 144.2 |
| 4 in | 4.500 in; 0.237 in | 3.998 in | 220 psi | 205.5 |
| 6 in | 6.625 in; 0.280 in | 6.031 in | 180 psi | 361.2 |
| 8 in | 8.625 in; 0.322 in | 7.941 in | 160 psi | 543.6 |
| 12 in | 12.750 in; 0.406 in | 11.889 in | 130 psi | 1019.0 |
Sources: Charlotte Pipe · IPEX · JM Eagle
Bell depth of Charlotte’s belled Sch 40 (made to D2672 or F480); minimum socket length of D2466 Sch 40 and D2467 Sch 80 fittings from Charlotte’s DC-PR.
| Size | Bell depth, belled pipe | Sch 40 fitting socket | Sch 80 fitting socket |
|---|---|---|---|
| 1/2 in | 2.00 in | 0.688 in | 0.875 in |
| 1 in | 2.50 in | 0.875 in | 1.125 in |
| 2 inThis page | 4.00 in | 1.156 in | 1.500 in |
| 3 in | 4.00 in | 1.875 in | 1.875 in |
| 4 in | 5.00 in | 2.000 in | 2.250 in |
| 6 in | 6.50 in | 3.000 in | 3.000 in |
| 2 in at CreslineBell depths differ by maker | 3.000 in | — | — |
Sources: Charlotte Pipe · Charlotte Pipe · Cresline
| Item | Figure |
|---|---|
| Temperature factorCharlotte, IPEX, Wavin, Cresline | 73 °F 1.00; 80 °F 0.88; 90 °F 0.75; 100 °F 0.62; 110 °F 0.50; 120 °F 0.40; 130 °F 0.30; 140 °F 0.22 |
| Hottest useCharlotte; Wavin | 140 °F (60 °C); Charlotte lists 150 °F as not rated |
| ThreadingGF; Cresline; UFGS 40 05 13 | Not recommended, the wall is too thin; UFGS: Schedule 40 pipe should not be threaded at all |
| FittingsCharlotte | Rated at 60% of the pipe; 1 in Sch 40: pipe 450, socket fittings 270, threaded fittings 225 psi |
| CementOatey | Regular-bodied cement up to 4 in for Sch 40, up to 2 in for Sch 80 |
| Worked by IPEX | 3 in Sch 40 at 100 °F: 260 × 0.62 = 161.20 psi |
Sources: Charlotte Pipe · IPEX · Wavin · Cresline · GF Harvel · UFGS · Oatey
| Item | Figure |
|---|---|
| Pressure and drainsCharlotte; JM Eagle; Cresline-West | Dual-marked ASTM D1785 and D2665, for pressure and for drain, waste and vent; Sch 80 is not listed for DWV |
| Foam-core twinCharlotte | ASTM F891 cellular core at Sch 40 sizes, not for pressure: 2 in × 10 ft at 43.9 lb per 100 ft against 69.5 solid |
| ColourCharlotte; JM Eagle; GF Harvel | Usually white, purple for reclaimed water; Harvel also makes grey Sch 40 |
| LengthsCharlotte; JM Eagle | 10 and 20 ft, plain end or belled |
| Water inside buildingsCharlotte | The IPC and UPC do not permit Sch 40 PVC for water distribution within a building; water service outside is listed in IPC Table 605.3 |
Sources: Charlotte Pipe · JM Eagle · Cresline-West · GF Harvel · Florida Building Commission
Outside-diameter tolerance from Spears’ D1785 table; wall tolerance from Rain Bird, plus only. The ranges are our arithmetic.
| Size | Outside diameter | Wall |
|---|---|---|
| 1/2 in | ±0.004 in: 0.836–0.844 | +0.020 in: 0.109–0.129 |
| 1 in | ±0.005 in: 1.310–1.320 | +0.020 in: 0.133–0.153 |
| 2 inThis page | ±0.006 in: 2.369–2.381 | +0.020 in: 0.154–0.174 |
| 3 in | ±0.008 in: 3.492–3.508 | +0.026 in: 0.216–0.242 |
| 4 in | ±0.009 in: 4.491–4.509 | +0.028 in: 0.237–0.265 |
| 6 in | ±0.011 in: 6.614–6.636 | +0.034 in: 0.280–0.314 |
| Item | Figure |
|---|---|
| Into the socketOatey; JM Eagle | The pipe bottoms out in the hub and is held 30 seconds |
| Standard lengthCresline | 20 ft, but 4 in and larger are sold by laying length |
| In the check aboveOur calculation | 240 − 4.00 = 236 in a length; 1,200 ÷ 236 = 5.08, so 6 lengths and 5 joints; 6 × 20 ft × 69.5 lb per 100 ft = 83.4 lb; 280 × 0.62 = 173.6 psi |
| StandardASTM | D1785-26 is current; D2466-24 for the fittings |
2.375 in (60.3 mm) outside, a 0.154 in minimum wall, a 2.047 in average ID, rated 280 psi at 73 °F and 69.5 lb per 100 ft (Charlotte, IPEX).
It depends on the size: 600 psi at 1/2 in, 450 at 1 in, 280 at 2 in, 220 at 4 in and 180 at 6 in, all at 73 °F. Multiply by 0.62 at 100 °F and 0.22 at 140 °F.
No. GF and Cresline do not recommend it, and UFGS says Schedule 40 pipe should not be threaded at all; use Sch 80 where you need threads.
Yes: Charlotte, JM Eagle and Cresline-West dual-mark it to ASTM D1785 and D2665 for pressure and DWV. Foam-core Sch 40 (F891) is for drains only, not pressure.
A D2466 fitting socket is at least 1.156 in deep at 2 in, where Sch 80 is 1.500 in; a Charlotte belled pipe end is 4.00 in deep at 2 in.
Charlotte says the IPC and UPC do not permit Sch 40 PVC for water distribution within a building; it is listed for water service outside (IPC Table 605.3).
A US buyer of Sch 40 checks the size against D1785, the wall and rating printed on the pipe, plain end or belled and the bell depth, the length, the colour, NSF 61 for drinking water, and whether it is dual-marked for DWV. Mark those on a photo of your own pipe with SizeMarker, like the picture at the top, and share one card in WhatsApp or WeChat.
