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 5990-01-499-6930
NSN 5965-00-549-0220
NSN 4140-01-605-4196
NSN 5905-00-226-1031
NSN 5965-01-055-7645
NSN 6135-01-071-4923
NSN 4140-01-576-3128
NSN 6135-01-457-2855
NSN 5920-00-057-2306
NSN 5855-00-361-0167
NSN 6130-01-426-1016
NSN 5930-01-532-7363