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 5915-01-183-5010
NSN 5945-01-199-9108
NSN 5999-01-634-0576
NSN 6105-01-040-2965
NSN 5835-01-537-1228
NSN 5985-01-005-9688
NSN 5895-01-235-8063
NSN 6645-01-646-2953
NSN 6650-01-487-7411
NSN 5950-00-191-3215
NSN 5920-00-001-3263
NSN 5975-01-020-7131