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 4140-01-521-4577
NSN 6135-01-468-2970
NSN 5835-00-572-7445
NSN 5990-01-432-4984
NSN 5950-01-032-8437
NSN 6105-01-528-4274
NSN 4140-01-323-4279
NSN 5990-01-378-1444
NSN 5935-00-963-9724
NSN 5996-01-584-5603
NSN 6145-01-412-0528
NSN 6610-01-425-1523