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 6610-00-291-7025
NSN 6110-00-538-8452
NSN 5930-01-460-1381
NSN 6620-00-555-3992
NSN 6135-01-164-3561
NSN 6150-01-243-7882
NSN 5855-00-408-2611
NSN 5990-00-845-2864
NSN 5945-01-027-2258
NSN 5975-01-427-3521
NSN 6145-01-235-3263
NSN 6110-01-272-1864