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 6110-00-343-1618
NSN 6150-00-323-8226
NSN 5895-00-680-9784
NSN 6320-01-564-0893
NSN 2925-00-088-6790
NSN 5855-01-634-0259
NSN 5990-01-365-6016
NSN 5945-00-236-7144
NSN 5999-01-511-1962
NSN 6145-00-648-2726
NSN 5925-01-054-3783
NSN 6150-00-774-1454