4D, 4DA, 4DS
For 4D, 4DA, 4DS, test or inspection is Periodic requalification; interval is 5; minimum test pressure is 2 times service pressure; regulation section is 49 CFR § 180.209, recorded from its source on 2026-08-06.
- Container specification
- 4D, 4DA, 4DS verified
- Test or inspection
- Periodic requalification our reading
- Interval
- 5. verified
- Minimum test pressure
- 2 times service pressure verified
- Regulation section
- 49 CFR § 180.209 verified
Values marked our reading are our classification of what the source says — the source does not print them in those words. The quote below is the evidence for each one; judge it yourself.
What the source says
4D, 4DA, 4DS | 2 times service pressure | 5.
— law.cornell.edu, retrieved 2026-08-06
Source
- law.cornell.eduhttps://www.law.cornell.edu/cfr/text/49/180.209