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 2925-01-248-6028
NSN 5935-01-501-7166
NSN 5996-01-520-9570
NSN 5835-01-381-2683
NSN 2925-00-038-0596
NSN 5920-01-534-3806
NSN 6650-01-292-7749
NSN 6150-01-210-0997
NSN 6105-01-555-4426
NSN 6650-00-878-8909
NSN 5950-00-494-7056
NSN 6610-00-093-4178