If a portable tank or IBC authorized under §98.33-5 of this part has a pipe or hose connection in its bottom, the connection must have a manually operated valve and a bolted flange, threaded cap, or similar device, to protect against leakage of the tank's contents.

[CGD 84-043, 55 FR 37412, Sept. 11, 1990, as amended by USCG-2011-0088, 78 FR 54788, Sept. 6, 2013]