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 5935-01-501-4473
NSN 6110-00-260-0130
NSN 6105-01-158-2232
NSN 5985-01-029-2785
NSN 5975-01-596-1066
NSN 5910-01-110-9782
NSN 5930-01-447-2030
NSN 6650-00-160-4288
NSN 5925-01-069-9459
NSN 5960-01-407-1350
NSN 6620-00-246-5159
NSN 6150-00-100-9226