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 4140-01-293-8837
NSN 6240-00-816-6749
NSN 5999-01-521-2484
NSN 2925-01-582-2869
NSN 6240-01-444-1673
NSN 6110-01-654-5874
NSN 6220-01-100-2703
NSN 5935-00-910-1617
NSN 6240-01-632-2700
NSN 7035-00-541-8516
NSN 6130-00-639-0666
NSN 5895-01-447-8011