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 6645-00-175-8156
NSN 6220-00-842-6897
NSN 5895-00-319-8451
NSN 2925-00-441-8252
NSN 7035-01-428-2336
NSN 5965-01-578-5626
NSN 5835-01-424-0054
NSN 5985-00-044-6048
NSN 4140-01-290-7409
NSN 6220-01-325-3131
NSN 5920-00-471-2548
NSN 5996-00-518-4880