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 5996-01-271-9927
NSN 5960-01-381-2478
NSN 6610-01-532-2488
NSN 5998-00-059-6412
NSN 6620-00-269-5168
NSN 6240-01-582-8354
NSN 5990-01-529-7307
NSN 5935-00-185-5560
NSN 5835-01-564-5575
NSN 5996-01-248-0947
NSN 4140-00-672-9531
NSN 6135-01-421-6373