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 6135-01-478-4657
NSN 5920-01-446-4524
NSN 5895-00-611-8109
NSN 5925-00-229-8024
NSN 5950-01-100-1079
NSN 6320-01-106-4414
NSN 5920-01-257-5124
NSN 6620-00-306-5075
NSN 5945-00-233-5804
NSN 5905-00-227-5936
NSN 5990-00-446-0518
NSN 5985-01-290-0626