46 C.F.R. § 105.10-20 Pressure vacuum relief valve.
Title 46 - Shipping
(a) The term pressure vacuum relief valve means any device or assembly of a mechanical, liquid, weight, or other type used for the automatic regulation of pressure or vacuum in enclosed places.
Title 46: Shipping
PART 105—COMMERCIAL FISHING VESSELS DISPENSING PETROLEUM PRODUCTS
Subpart 105.10—Definition of Terms Used in This Part
§ 105.10-20 Pressure vacuum relief valve.
