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 5996-00-270-0340
NSN 6145-00-144-0918
NSN 6220-01-655-2323
NSN 5910-01-396-5623
NSN 4140-00-435-5607
NSN 6110-01-651-2629
NSN 5920-00-915-1206
NSN 5915-01-368-1168
NSN 5985-00-107-4178
NSN 5920-01-187-3720
NSN 6110-00-260-0130
NSN 6645-00-450-2209