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 5965-00-347-0231
NSN 5895-01-202-9980
NSN 5965-01-254-3622
NSN 6610-00-290-0758
NSN 5920-01-461-8719
NSN 6145-00-104-7789
NSN 5985-00-564-4102
NSN 6650-00-262-2324
NSN 5998-01-423-8525
NSN 5975-00-757-6894
NSN 5985-01-215-0021
NSN 5996-01-395-1909