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 6650-01-431-9625
NSN 5895-01-211-5663
NSN 5999-01-383-6984
NSN 5998-01-063-5867
NSN 5945-01-163-5198
NSN 5998-01-439-3787
NSN 6620-01-461-2387
NSN 2925-01-443-5929
NSN 5998-01-222-1993
NSN 6320-01-149-8865
NSN 6130-01-473-7046
NSN 6240-00-224-5323