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 5950-01-201-0497
NSN 4140-00-590-2317
NSN 5950-01-432-6778
NSN 5925-01-341-1729
NSN 6135-01-204-8712
NSN 6620-01-327-3011
NSN 6145-00-779-2859
NSN 5895-01-483-1946
NSN 6110-01-350-5850
NSN 5920-00-779-0827
NSN 5920-01-289-0852
NSN 6105-01-463-9928