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 6685-00-405-4991
NSN 6110-00-955-0900
NSN 4140-00-210-0552
NSN 5975-01-234-9254
NSN 6620-00-444-6972
NSN 5950-01-033-3950
NSN 6150-00-600-4173
NSN 5950-00-000-0146
NSN 5996-01-143-5779
NSN 5990-00-101-8318
NSN 5985-01-641-7796
NSN 6650-01-389-0225