A valve permitting flow in one direction only. It does not have a stem, except when equipped with a lever and weight and has no pressure adjustment. It may be inline or cartridge (manifold) design.
NSN 6130-01-118-1087
NSN 5985-01-297-1352
NSN 5930-01-191-2924
NSN 5950-01-453-8316
NSN 6105-01-443-1936
NSN 6320-01-388-9450
NSN 5895-00-798-2352
NSN 5895-01-197-7401
NSN 6150-01-267-5488
NSN 6145-00-455-2809
NSN 5960-00-897-2124
NSN 2925-01-543-0073