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 2925-01-513-0479
NSN 7035-01-652-8959
NSN 6240-01-462-5433
NSN 6220-01-173-3177
NSN 5990-00-532-2641
NSN 5998-01-415-2525
NSN 6645-01-302-9608
NSN 6130-00-081-9879
NSN 6220-01-078-1625
NSN 6145-01-187-0772
NSN 5990-00-315-9343
NSN 6130-00-813-4413