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 6145-01-176-4047
NSN 5935-01-566-1058
NSN 5930-01-117-1589
NSN 6105-01-553-6626
NSN 5895-01-231-2617
NSN 5835-00-532-5910
NSN 5930-01-244-6476
NSN 6620-00-067-3539
NSN 5996-01-422-3087
NSN 5985-01-441-8471
NSN 5990-01-014-1280
NSN 5855-01-112-7725