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 2925-01-446-6976
NSN 6135-01-511-1975
NSN 5985-01-325-1948
NSN 5915-01-434-8946
NSN 6135-01-303-0295
NSN 5965-01-569-8634
NSN 6645-00-321-6071
NSN 6610-01-078-1725
NSN 6610-01-207-0045
NSN 5910-00-580-4742
NSN 6145-01-397-6070
NSN 2925-01-161-2325