A mechanical device designed to permit a free flow of air into and out of an enclosure, usually used on engine crankcase, vehicular differentials and transmissions, pumps, compressors, and the like. see also cap, vent, fuel storage tank. excludes ventalator (as modified).
Classification: Pressure-reducing valves, pneumatic fluid power type, filter-regulators and filter-regulator-lubricators
NSN 5998-01-450-8131
NSN 5990-01-485-8874
NSN 6105-01-178-6092
NSN 5999-00-417-0485
NSN 5965-01-156-7013
NSN 6610-01-460-1385
NSN 6105-00-034-6053
NSN 6110-00-271-9928
NSN 6685-01-215-3751
NSN 5905-00-011-8305
NSN 6150-01-452-5425
NSN 5945-00-652-2801