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 2925-01-578-7731
NSN 5965-01-172-5724
NSN 4140-01-325-1436
NSN 6150-01-168-1556
NSN 4140-01-263-0665
NSN 5975-00-631-0120
NSN 5915-01-323-1481
NSN 6135-00-235-1938
NSN 6650-01-044-6377
NSN 5895-01-595-6199
NSN 6240-01-105-1399
NSN 5990-01-426-7350