U/o b1b acft
An assembly consisting of an orifice in a fixed plate, disk, or tube with screens or filters on one or both sides, depending on the direction of filtered flow. See restrictor, fluid flow.
NSN 5945-01-447-3456
NSN 6150-01-025-5292
NSN 5935-00-548-2190
NSN 5835-01-203-1871
NSN 5950-01-533-2694
NSN 5999-00-582-0354
NSN 6650-01-323-5407
NSN 6220-01-401-5337
NSN 5915-01-282-7193
NSN 5835-01-568-7796
NSN 6220-00-482-1984
NSN 6320-01-399-6177