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 6620-01-234-1044
NSN 6145-01-552-3576
NSN 6240-00-630-8069
NSN 5935-01-444-1281
NSN 5915-01-446-7238
NSN 5895-01-455-2011
NSN 5960-01-011-0568
NSN 5925-01-445-9611
NSN 5835-00-807-5632
NSN 5835-01-020-5650
NSN 5996-01-590-7885
NSN 6610-01-088-9288