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 5950-01-296-4509
NSN 5925-01-632-2420
NSN 5990-00-221-0878
NSN 6110-01-400-4207
NSN 6135-01-100-3593
NSN 6650-00-269-5000
NSN 5950-00-409-5822
NSN 5985-01-150-4451
NSN 5835-01-442-6482
NSN 6150-01-014-5691
NSN 5915-01-411-6933
NSN 6645-01-096-9719