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 6150-00-372-5979
NSN 5998-01-011-7961
NSN 5975-00-594-8857
NSN 4140-00-101-7903
NSN 2925-01-357-9021
NSN 5920-01-580-0777
NSN 4140-00-087-4611
NSN 5935-01-359-9047
NSN 6135-01-130-3145
NSN 5915-00-959-2140
NSN 5990-00-977-8096
NSN 2925-01-426-3410