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 5925-01-070-0445
NSN 6135-01-359-5798
NSN 5998-01-442-8219
NSN 6110-00-651-1216
NSN 6110-01-519-9131
NSN 6320-01-582-6668
NSN 6135-00-756-6149
NSN 5905-01-370-2698
NSN 6130-00-547-8050
NSN 6650-00-539-7298
NSN 6220-01-070-2772
NSN 6620-00-753-0745