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 5835-01-507-0731
NSN 5935-01-442-4265
NSN 5990-01-212-2037
NSN 5999-01-365-2581
NSN 5999-01-262-0444
NSN 6240-01-586-7621
NSN 5950-00-885-0354
NSN 5965-00-289-6280
NSN 5985-01-543-5122
NSN 6645-00-875-0772
NSN 5925-00-578-0479
NSN 4140-00-444-9695