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 5965-01-171-7612
NSN 4140-01-034-0706
NSN 2925-01-094-4771
NSN 5855-01-555-3354
NSN 6110-00-630-5255
NSN 5950-01-182-9170
NSN 4140-01-348-9029
NSN 6150-01-265-6892
NSN 6240-01-111-5623
NSN 5895-01-319-1954
NSN 6150-00-869-4681
NSN 5835-01-550-5094