An item designed to automatically relieve vacuum, by the intake of air, when the internal pressure falls below atmospheric pressure. See also valve, vacuum regulating.
Classification: Other taps, cocks, valves, etc., nesoi
NSN 6620-00-405-4621
NSN 5965-00-639-6621
NSN 4140-01-426-0195
NSN 6645-01-254-0490
NSN 6240-01-368-6248
NSN 5975-01-160-5183
NSN 5990-01-080-0097
NSN 5855-01-337-0245
NSN 6220-01-487-2229
NSN 6135-01-538-3507
NSN 6650-01-333-5975
NSN 4140-01-397-8445