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 5945-01-207-1732
NSN 5895-01-290-1521
NSN 5855-00-631-4565
NSN 5975-01-314-3648
NSN 5835-00-061-5717
NSN 6650-01-258-0811
NSN 6620-01-138-0089
NSN 5915-01-318-2491
NSN 5996-01-235-1643
NSN 5960-01-609-6565
NSN 6620-01-151-3986
NSN 5945-01-596-8390