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 5950-01-605-1386
NSN 6145-01-117-3575
NSN 5996-01-033-1300
NSN 5960-01-253-2333
NSN 6610-01-203-8098
NSN 6320-00-456-2092
NSN 6105-01-416-3838
NSN 5960-01-504-3415
NSN 6105-01-397-2850
NSN 5975-01-634-0678
NSN 6110-01-512-1242
NSN 6135-01-271-7151