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 6240-01-222-8906
NSN 5920-01-264-4950
NSN 5920-00-241-6803
NSN 4140-01-646-1182
NSN 2925-01-194-9737
NSN 6240-01-141-5230
NSN 5935-01-506-4440
NSN 5999-00-734-1105
NSN 5960-00-224-6063
NSN 6650-01-527-0465
NSN 7035-00-929-0363
NSN 6650-01-032-1786