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 5915-01-303-0561
NSN 5965-01-612-1537
NSN 5910-00-872-1600
NSN 2925-00-111-4097
NSN 6110-01-095-2965
NSN 5915-01-587-2913
NSN 6620-01-448-8926
NSN 5985-01-468-5674
NSN 6320-01-486-8004
NSN 5975-01-160-3729
NSN 5965-01-294-0142
NSN 5855-01-042-7990