Dimensions / Building materials / PVC pipe / Schedule 80 PVC
Schedule 80 PVC is the thick-wall ASTM D1785 pipe: 2 in Sch 80 has the same 2.375 in (60.3 mm) outside diameter as Sch 40 but a 0.218 in wall, a 1.913 in average ID and 400 psi at 73 °F, 93.6 lb per 100 ft (Charlotte, GF Harvel). It is grey, mostly 20 ft plain end, and the one PVC schedule makers allow to be threaded: a threaded joint keeps 50% of the rating, and threading stops at 4 in (GF, IPEX, UFGS). Sizes start at 1/4 in, rated 1130 psi. Its D2467 fittings have 1.500 in sockets at 2 in, and Charlotte rates fittings at 60% of the pipe.
| OD (2 in) | Minimum wall | Rated at 73 °F |
|---|---|---|
| 2.375in60.3 mm | 0.218in5.54 mm | 400psi |
Sources: Charlotte Pipe. Checked October 2026.
Ten plain-end 2 in lengths on couplings for a 200 ft line, threaded joints at 100 psi and 100 °F, and one pipe measured with calipers are filled in; try a size, a hotter line or solvent-welded joints.
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.
Plain-end 2 in Sch 80 joined with couplings: each 20 ft length adds 240.125 in, the pipe plus the 1/8 in left between pipe ends inside a coupling, so 200 ft takes 10 lengths and 9 couplings; you have 10. At 93.6 lb per 100 ft they weigh 187.2 lb.
Plain-end 20 ft lengths with couplings; Charlotte leaves 1/8 in between pipe ends in a 2 in coupling.
Threaded 2 in Sch 80 keeps 50% of the plain-end rating: 400 psi × 0.62 at 100 °F × 50% is 124 psi, enough for your 100 psi.
Threaded 2 in Sch 80 keeps half of 400 psi, then 0.62 of that at 100 °F.
2 in Sch 80: outside diameter 2.375 ± 0.006 in, so 2.369–2.381; wall at least 0.218 in and at most 0.244. Your 2.373 in and 0.23 in are within both.
Spears: ±0.006 in on a 2 in pipe; Rain Bird: 0.218 in wall plus 0.026 in.
Exporting Schedule 80? Put a photo of a threaded end and its print line into SizeMarker, mark size, wall, thread and rating, and send it with the quote.
Mark a photoCharlotte’s plain-end data sheet; average ID from GF Harvel, which IPEX Table A-14 matches.
| Size | OD; minimum wall | Average ID | Rated at 73 °F | lb per 100 ft |
|---|---|---|---|---|
| 1/4 inThe smallest size | 0.540 in; 0.119 in | 0.282 in | 1130 psi | 10.0 |
| 3/8 in | 0.675 in; 0.126 in | 0.403 in | 920 psi | 13.8 |
| 1/2 in | 0.840 in; 0.147 in | 0.526 in | 850 psi | 20.3 |
| 3/4 in | 1.050 in; 0.154 in | 0.722 in | 690 psi | 27.5 |
| 1 in | 1.315 in; 0.179 in | 0.936 in | 630 psi | 40.5 |
| 1-1/2 in | 1.900 in; 0.200 in | 1.476 in | 470 psi | 67.7 |
| 2 inThis page | 2.375 in (60.3 mm); 0.218 in (5.54 mm) | 1.913 in | 400 psi | 93.6 |
| 3 in | 3.500 in; 0.300 in | 2.864 in | 370 psi | 194.2 |
| 4 in | 4.500 in; 0.337 in | 3.786 in | 320 psi | 279.3 |
| 6 in | 6.625 in; 0.432 in | 5.709 in | 280 psi | 532.7 |
| 8 in | 8.625 in; 0.500 in | 7.565 in | 250 psi | 808.9 |
| 12 in | 12.750 in; 0.687 in | 11.294 in | 230 psi | 1650.1 |
Sources: Charlotte Pipe · GF Harvel · IPEX
| Item | Figure |
|---|---|
| Threaded ratingGF Harvel; IPEX | 50% of the plain-end rating at 73 °F |
| Largest sizeIPEX; UFGS | Not above 4 in; UFGS has threaded joints above 2 in back-welded for full pressure |
| Thread formCharlotte | ANSI/ASME B1.20.1 or ASTM F1498 |
| Hot waterGF Harvel | No threaded PVC above 110 °F |
| Threaded drop pipeCresline | 1 in Sch 80 threaded at 315 psi, half of 630; white, not grey |
| FittingsASTM | D2467 socket, D2464 threaded |
Sources: GF Harvel · IPEX · UFGS · Charlotte Pipe · Cresline · ASTM
Minimum socket length from Charlotte’s DC-PR; the socket entrance and bottom diameters are the same for both schedules.
| Size | Sch 80 socket | Sch 40 socket | Entrance / bottom |
|---|---|---|---|
| 1/2 in | 0.875 in | 0.688 in | 0.848 / 0.836 in |
| 3/4 in | 1.000 in | 0.719 in | 1.058 / 1.046 in |
| 1 in | 1.125 in | 0.875 in | 1.325 / 1.310 in |
| 1-1/2 in | 1.375 in | 1.094 in | 1.912 / 1.894 in |
| 2 inThis page | 1.500 in | 1.156 in | 2.387 / 2.369 in |
| 4 in | 2.250 in | 2.000 in | 4.518 / 4.491 in |
| 6 inEqual from 2-1/2 in up, except 4 in | 3.000 in | 3.000 in | 6.647 / 6.614 in |
Sources: Charlotte Pipe
| Item | Figure |
|---|---|
| Factor at each temperatureGF Harvel prints 0.51 at 110 °F and 0.31 at 130 °F | 1.00 at 73 °F, .88 at 80, .75 at 90, .62 at 100, .50 at 110, .40 at 120, .30 at 130, .22 at 140 °F |
| Worked by Charlotte | 6 in Sch 80 at 140 °F: 280 × .22 = 62 psi |
| Worked by GF | 10 in Sch 80 at 120 °F: 230 × 0.40 = 92 psi |
| FittingsCharlotte | Sch 80 fittings at 60% of the pipe; the system is rated by its lowest part |
| CouplingsCharlotte DC-PR | 1/8 in between pipe ends at 1/2–2 in, 3/16 in at 3–4 in, 1/4 in at 6 in |
| In the check aboveOur calculation | 400 × 0.62 × 50% = 124 psi; 2,400 ÷ 240.125 in = 9.99, so 10 lengths and 9 couplings, 187.2 lb |
Sources: GF Harvel · Charlotte Pipe · Charlotte Pipe
Outside-diameter tolerance from Spears’ Sch 80 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: 0.147–0.167 |
| 1 in | ±0.005 in: 1.310–1.320 | +0.022 in: 0.179–0.201 |
| 2 inThis page | ±0.006 in: 2.369–2.381 | +0.026 in: 0.218–0.244 |
| 3 in | ±0.008 in: 3.492–3.508 | +0.036 in: 0.300–0.336 |
| 4 in | ±0.009 in: 4.491–4.509 | +0.040 in: 0.337–0.377 |
| 6 in | ±0.011 in: 6.614–6.636 | +0.052 in: 0.432–0.484 |
| Item | Figure |
|---|---|
| ColourCharlotte; JM Eagle; GF Harvel; Cresline | Grey or dark grey; white only as Cresline threaded drop pipe |
| Ends and lengthsJM Eagle; Cresline; Charlotte | 20 ft plain end; Charlotte also sells it belled |
| Not for drainsCharlotte | Not listed for DWV, and not to be used with Sch 40 DWV fittings: its bore is much smaller |
| SupportsCresline bulletin T-1 | Support spacing may be increased 20% over Sch 40 |
| CementCharlotte; Oatey | Medium- or heavy-bodied; regular-bodied only up to 2 in |
| Utility useMiami-Dade Water and Sewer | Sch 80 PVC to ASTM D1785, D2467, D2464 and D2564 |
| Measured in the checkOur reading | OD 2.373 in, wall 0.230 in |
Sources: Charlotte Pipe · JM Eagle · GF Harvel · Cresline · Cresline · Oatey · Miami-Dade WASD
2.375 in (60.3 mm) outside, a 0.218 in minimum wall, a 1.913 in average ID, 400 psi at 73 °F and 93.6 lb per 100 ft (Charlotte, GF Harvel).
Yes, it is the one PVC schedule makers allow to be threaded, but a threaded joint keeps 50% of the rating (1 in: 630 to 315 psi), and IPEX and UFGS stop at 4 in.
At 73 °F: 850 psi at 1/2 in, 630 at 1 in, 400 at 2 in, 320 at 4 in and 280 at 6 in. Multiply by .62 at 100 °F and .22 at 140 °F.
At 1/2 to 2 in and at 4 in, yes: 1.500 against 1.156 in at 2 in. The socket diameters are the same, so the pipe goes into either.
1/4 in: 0.540 in outside, a 0.119 in wall and 1130 psi at 73 °F (Charlotte); 3/8 in is next at 920 psi.
Charlotte advises against it: Sch 80 is not listed for DWV, and its much smaller bore does not match Sch 40 DWV fittings.
Industrial buyers of Sch 80 want the size and wall against D1785, the rating with and without threads, the thread standard, plain end or belled, the colour, and the fittings to D2467 or D2464 that go with it. Mark those on your own pipe with SizeMarker, as in the picture above, and share the card.
