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 5905-01-075-1899
NSN 6650-01-256-7038
NSN 5895-01-104-3815
NSN 5950-01-161-0918
NSN 6145-00-466-4068
NSN 2925-01-330-2988
NSN 2925-01-424-0235
NSN 5985-01-401-5387
NSN 6685-01-229-2465
NSN 6105-01-325-4769
NSN 5930-00-957-7484
NSN 5975-01-600-0347