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 6645-01-334-0782
NSN 5910-00-078-6735
NSN 5910-01-231-8558
NSN 5990-00-933-0526
NSN 6650-00-104-9611
NSN 5996-00-940-2569
NSN 6620-01-085-8688
NSN 5935-00-332-1124
NSN 7035-01-464-1213
NSN 6610-01-167-8747
NSN 6130-00-455-2423
NSN 5905-01-270-1075