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 6610-00-403-1991
NSN 5965-01-202-1007
NSN 5905-01-374-5937
NSN 6650-01-443-4053
NSN 5835-01-561-2959
NSN 6220-00-332-5859
NSN 2925-01-109-7177
NSN 5930-01-346-9692
NSN 5985-01-457-7430
NSN 2925-01-360-3575
NSN 6645-01-420-5623
NSN 6620-00-992-5876