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 5920-00-828-7904
NSN 2925-01-509-3783
NSN 5855-00-189-6066
NSN 6110-00-857-4274
NSN 5985-00-334-8160
NSN 5920-00-555-1877
NSN 5930-01-422-9591
NSN 6620-01-540-6913
NSN 6645-01-543-7834
NSN 5945-01-195-1975
NSN 5895-00-197-7188
NSN 6610-00-042-8461