4930-01-451-6809 (31272-1)
NSN 4930-01-451-6809 (NIIN 01-451-6809) is a relief vent unit in Federal Supply Class 4930, Lubrication And Fuel Dispensing Equipment — a spring loaded device equipped with automatic pressure and vacuum relief valves to relieve drum structure of excessive vapor pressure build-ups and provide. Manufacturer part number 31272-1 (Belfort Instrument Company, CAGE 82205); also referenced as 62828-90352-2 (Awi Systems Management Inc).
NIIN assigned December 1997; DEMIL A (none required); ESD/EMI-sensitive; unit of issue EA (each), $1,636.83 gov standard price.