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 5935-00-404-5809
NSN 5990-01-072-6074
NSN 5960-01-089-7174
NSN 2925-01-612-0405
NSN 5990-01-577-2120
NSN 2925-01-152-8618
NSN 6645-01-246-2725
NSN 6110-01-629-8370
NSN 5835-00-373-2671
NSN 5985-01-607-0049
NSN 6645-01-381-6084
NSN 6650-00-499-7446