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 6240-00-057-9498
NSN 6110-00-612-7146
NSN 6135-00-269-5843
NSN 2925-00-450-7783
NSN 6610-01-511-0982
NSN 5999-00-290-5898
NSN 5975-00-226-1167
NSN 6685-01-437-8603
NSN 5985-00-466-3574
NSN 5960-00-194-1488
NSN 5985-01-025-1951
NSN 5935-01-401-5324