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 5985-01-314-5759
NSN 6135-00-152-8729
NSN 5945-01-474-4335
NSN 5905-00-468-1913
NSN 5855-01-010-4921
NSN 4140-01-306-2268
NSN 6240-00-762-0795
NSN 5998-01-393-5455
NSN 5996-00-891-9250
NSN 5905-01-375-5567
NSN 5960-00-248-1274
NSN 5895-01-516-3106