46 C.F.R. § 105.25-20 Shutoff valves required.
Title 46 - Shipping
(a) Shutoff valves shall be provided in the suction lines as close to the tanks as possible. The valves shall be installed so as to shut off against the flow. (b) Remote control of this shutoff valve shall be provided where deemed necessary by the marine inspector.
Title 46: Shipping
PART 105—COMMERCIAL FISHING VESSELS DISPENSING PETROLEUM PRODUCTS
Subpart 105.25—Additional Requirements—When Cargo Tanks Are Installed Below Decks
§ 105.25-20 Shutoff valves required.