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 4140-01-574-7357
NSN 6145-00-372-3713
NSN 5960-01-156-7469
NSN 5915-01-515-0156
NSN 5920-00-730-4343
NSN 6610-00-156-5699
NSN 5985-01-382-6538
NSN 6220-00-583-9119
NSN 6240-00-297-3919
NSN 5895-00-709-2617
NSN 4140-01-519-9343
NSN 5920-00-845-6226