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 6220-00-147-4011
NSN 6645-00-952-4509
NSN 6240-01-415-3014
NSN 5910-01-281-7666
NSN 5999-01-441-4627
NSN 6150-01-487-6624
NSN 4140-01-219-0765
NSN 6105-00-937-7643
NSN 6110-00-199-5451
NSN 5960-01-234-9107
NSN 5998-00-484-9439
NSN 6110-01-132-5997