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 5925-00-150-1072
NSN 5920-01-263-7012
NSN 5990-01-031-7599
NSN 6645-00-466-0685
NSN 5998-01-010-3973
NSN 6220-01-305-4299
NSN 5985-00-758-7889
NSN 6145-01-387-5560
NSN 5960-00-822-6787
NSN 6105-01-256-8621
NSN 5998-01-513-2781
NSN 5935-01-630-5850