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 5935-01-535-9814
NSN 2925-01-085-0691
NSN 6150-01-507-8976
NSN 5895-01-070-1557
NSN 5960-01-523-9098
NSN 5925-01-204-6888
NSN 7035-00-445-9657
NSN 5925-01-138-1333
NSN 6685-01-341-8425
NSN 4140-01-359-9824
NSN 6645-00-544-2578
NSN 5990-00-622-1010