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 6240-00-079-1759
NSN 6620-01-580-0883
NSN 6145-01-286-7268
NSN 6645-00-456-2923
NSN 5835-01-314-2781
NSN 5950-00-729-8502
NSN 6130-01-317-4239
NSN 5895-01-485-3394
NSN 5835-01-090-2844
NSN 5895-01-479-1744
NSN 6130-00-521-1414
NSN 6240-00-994-4056