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 6650-01-214-9728
NSN 5998-01-113-7747
NSN 5950-01-178-0902
NSN 5920-00-883-4317
NSN 5960-00-181-0640
NSN 6320-01-268-3072
NSN 6685-00-997-2719
NSN 6220-00-156-4469
NSN 5999-01-042-3649
NSN 5965-01-293-0121
NSN 5935-01-375-0469
NSN 5950-01-071-7430