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 5965-01-555-8007
NSN 5910-01-417-2013
NSN 5960-01-599-9821
NSN 5990-00-277-3763
NSN 5998-00-673-2880
NSN 6220-01-618-8697
NSN 2925-00-710-6161
NSN 6135-00-542-6216
NSN 6650-00-989-6991
NSN 6650-00-458-2394
NSN 5945-01-445-9498
NSN 5985-00-466-3574