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 5998-01-142-2088
NSN 5985-01-180-9874
NSN 5855-01-147-4785
NSN 5965-01-554-8140
NSN 6220-00-419-6152
NSN 5855-01-314-8335
NSN 5985-00-779-9130
NSN 6110-01-398-6928
NSN 5998-00-909-3641
NSN 5985-01-398-7383
NSN 5998-00-473-2035
NSN 5985-00-007-2493