Fitting Guide
| NPS | O.D. D |
LENGTH H |
LENGTH H1 |
| 1/2 | 21.3 | 25 | 25 |
| 3/4 | 26.7 | 25 | 25 |
| 1 | 33.4 | 38 | 38 |
| 1¼ | 42.2 | 38 | 38 |
| 1½ | 48.3 | 38 | 38 |
| 2 | 60.3 | 38 | 44 |
| 2½ | 73 | 38 | 51 |
| 3 | 88.9 | 51 | 64 |
| 3½ | 101.6 | 64 | 76 |
| 4 | 114.3 | 64 | 76 |
| 5 | 141.3 | 76 | 89 |
| 6 | 168.3 | 89 | 102 |
| 8 | 219.1 | 102 | 127 |
| 10 | 273 | 127 | 152 |
| 12 | 323.8 | 152 | 178 |
| 14 | 355.6 | 165 | 191 |
| 16 | 406.4 | 178 | 203 |
| NPS | O.D. D |
LENGTH H |
LENGTH H1 |
| 18 | 457 | 203 | 229 |
| 20 | 508 | 229 | 254 |
| 22 | 559 | 254 | 254 |
| 24 | 610 | 267 | 305 |
| 26 | 660 | 267 | |
| 28 | 711 | 267 | |
| 30 | 762 | 267 | |
| 32 | 813 | 267 | |
| 34 | 864 | 237 | |
| 36 | 914 | 267 | |
| 38 | 965 | 305 | |
| 40 | 1016 | 305 | |
| 42 | 1067 | 305 | |
| 44 | 1118 | 343 | |
| 46 | 1168 | 343 | |
| 48 | 1219 | 343 |
Dimensional Tolerances of End Caps ASME B16.9
| Nominal Pipe Size | 1/2 to 2½ | 3 to 3½ | 4 | 5 to 8 |
| Outside Diameter at Bevel (D) |
+ 1.6 - 0.8 |
1.6 | 1.6 | + 2.4 - 1.6 |
| Inside Diameter at End | 0.8 | 1.6 | 1.6 | 1.6 |
| Overall Length (H) | 3 | 3 | 3 | 6 |
| Nominal Pipe Size | 10 to 18 | 20 to 24 | 26 to 30 | 32 to 48 |
| Outside Diameter at Bevel (D) |
+ 4 - 3.2 |
+ 6.4 - 4.8 |
+ 6.4 - 4.8 |
+ 6.4 - 4.8 |
| Inside Diameter at End | 3.2 | 4.8 | + 6.4 - 4.8 |
+ 6.4 - 4.8 |
| Overall Length (H) | 6 | 6 | 10 | 10 |
| Wall Thickness (t) | Not less than 87.5% of Nominal Wall Thickness | |||
Dimensional tolerances are in millimeters unless otherwise indicated and are equal ± except as noted.
Note:
MSS SP-43 only covers stainless steel buttweld fittings made for use with Schedule 5S and 10S pipe and Stub Ends suitable for use with Schedule 40S pipe, as defined in ASME B36.19. The dimensions and dimensional tolerances defined in MSS SP-43 are substantially the same as those in ASME B16.9 specifications from NPS 1/2 - NPS 24. Except with regard to the outside diameter at the bevel.
| NPS | STD | XS | SCH 160 | XXS |
| 1 | 0.09 | 0.14 | 0.18 | 0.23 |
| 1¼ | 0.14 | 0.18 | 0.23 | 0.34 |
| 1½ | 0.18 | 0.23 | 0.27 | 0.41 |
| 2 | 0.27 | 0.34 | 0.57 | 0.68 |
| 2½ | 0.41 | 0.45 | 0.79 | 1.13 |
| 3 | 0.68 | 0.79 | 1.32 | 1.81 |
| 3½ | 0.91 | 1.13 | - | 2.72 |
| 4 | 1.13 | 1.36 | 2.68 | 3.4 |
| 5 | 2.04 | 2.49 | 4.54 | 5.44 |
| 6 | 2.95 | 4.08 | 6.8 | 8.16 |
| 8 | 5.44 | 7.26 | 14.06 | 13.61 |
| 10 | 9.07 | 11.34 | 25.85 | - |
| 12 | 13.61 | 16.33 | 43.09 | - |
| 14 | 16.33 | 20.41 | - | - |
| 16 | 18.14 | 24.49 | - | - |
| 18 | 24.49 | 32.66 | - | - |
| 20 | 34.02 | 39.01 | - | - |
| 22 | 42.64 | 56.7 | - | - |
| 24 | 43.54 | 58.97 | - | - |
| 26 | 53.98 | 72.12 | - | - |
| 30 | 78.02 | 103.87 | - | - |
| NPS | STD | XS | SCH 160 | XXS |
Note:
ASME buttweld fitting specifications do not specify weights for fittings. Weights quoted in the table on this page are based on manufacturers information and should be considered as approximate and provided as a guide only (fitting weights can vary considerably between manufacturers due to differences in construction).