U.S. Code of Federal Regulations
Regulations most recently checked for updates: Aug 27, 2025
In addition to § 179.220, the individual specification requirements are as follows:
| DOT specification | Insulation | Bursting
pressure (psig) | Minimum
plate thickness (inches) | Test pressure (psig) | Bottom
outlet | Bottom
washout | Reference
(179.221-***) |
|---|---|---|---|---|---|---|---|
| 115A60ALW | Yes | 240 |
| 60 | Optional. | Optional | |
| 115A60W1 | Yes | 240 |
| 60 | Optional | Optional | 1 |
| 115A60W6 | Yes | 240 |
| 60 | Optional | Optional | 1 |
