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 5950-01-442-8009
NSN 6220-00-204-4647
NSN 6110-01-139-4127
NSN 5990-00-827-0684
NSN 5835-01-478-9428
NSN 5925-01-145-4565
NSN 5835-01-170-5537
NSN 6645-01-235-0892
NSN 5920-00-259-7294
NSN 6645-00-133-1536
NSN 6105-01-634-0322
NSN 6620-01-322-5576