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 6645-01-076-4655
NSN 5855-01-233-2767
NSN 6135-01-265-1384
NSN 5975-01-063-4101
NSN 5910-01-206-4641
NSN 5935-01-127-2413
NSN 4140-00-972-5348
NSN 5920-01-038-7388
NSN 5999-01-595-4736
NSN 4140-01-502-8290
NSN 6240-01-464-5903
NSN 6240-01-623-9885