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 5920-01-172-5748
NSN 6130-01-605-3558
NSN 5855-00-973-5717
NSN 5985-01-559-0074
NSN 4140-01-202-7853
NSN 5996-01-324-0710
NSN 6240-01-437-6888
NSN 5999-00-857-4914
NSN 5960-01-141-6489
NSN 5910-00-444-6766
NSN 6145-00-104-7789
NSN 6620-01-248-0358