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 7035-01-206-2623
NSN 4140-01-044-5118
NSN 5910-01-025-9987
NSN 6220-01-416-2867
NSN 5990-00-258-0228
NSN 5965-01-429-9777
NSN 6650-01-442-0267
NSN 5910-01-099-7264
NSN 5855-01-018-1247
NSN 6650-01-245-7642
NSN 6685-01-199-3239
NSN 5965-00-432-8528