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 5975-01-417-9229
NSN 6645-00-879-9941
NSN 5935-01-278-8985
NSN 5855-01-552-4759
NSN 6620-00-286-5721
NSN 5960-01-057-5802
NSN 4140-01-161-3657
NSN 5960-00-162-8754
NSN 5990-00-073-0574
NSN 6110-01-648-1954
NSN 5835-01-453-3074
NSN 5960-01-141-5790