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 6240-01-352-3642
NSN 5930-01-452-0966
NSN 5920-01-312-4452
NSN 5895-01-553-0499
NSN 6105-00-106-0395
NSN 6220-01-076-4383
NSN 7035-01-317-4227
NSN 6650-00-702-3560
NSN 5925-01-395-1019
NSN 6135-01-022-5427
NSN 6645-01-062-0905
NSN 5996-00-433-7505