49 CFR § 178.346-4
Outlets
November 18, 2020
(a) All outlets on each tank must conform to §178.345-11 and this section.
(b) External self-closing stop-valves are not authorized as an alternative to internal self-closing stop-valves on loading/unloading outlets.
[Amdt. 178-89, 54 FR 25029, June 12, 1989. Redesignated by Amdt. 178-112, 61 FR 18934, Apr. 29, 1996]