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 5996-01-048-1285
NSN 6645-01-063-5383
NSN 5985-01-560-9488
NSN 5998-01-409-2826
NSN 6610-01-387-5630
NSN 5895-01-124-7591
NSN 5925-01-178-4078
NSN 5925-01-608-4259
NSN 5930-01-421-3329
NSN 6135-00-416-2898
NSN 5915-01-525-7731
NSN 6145-00-596-8447