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 5990-01-294-6198
NSN 5920-00-683-7883
NSN 5855-01-307-1159
NSN 6130-01-149-7595
NSN 6685-01-072-1955
NSN 5855-00-149-0766
NSN 5975-00-035-6524
NSN 5996-01-409-1860
NSN 5998-00-013-6913
NSN 6150-00-629-4342
NSN 6610-00-021-2259
NSN 6650-01-167-5604