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 5960-01-082-8571
NSN 5920-01-514-2965
NSN 6650-01-112-6879
NSN 5975-01-273-0209
NSN 5960-00-070-0274
NSN 6620-01-399-3615
NSN 5960-01-649-1341
NSN 5996-01-622-8976
NSN 5965-01-610-5410
NSN 4140-00-218-0804
NSN 6320-00-222-1468
NSN 5975-00-469-6672