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 6620-01-517-0014
NSN 5950-01-141-6741
NSN 5990-01-481-0164
NSN 7035-01-250-5744
NSN 5985-01-170-1772
NSN 2925-01-480-8273
NSN 5920-00-192-6565
NSN 5920-01-035-7713
NSN 6135-01-205-5965
NSN 6620-00-908-2368
NSN 6135-00-110-1981
NSN 5855-01-038-2189