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 5996-01-559-6073
NSN 7035-01-433-8021
NSN 6135-01-202-8113
NSN 5950-01-012-3097
NSN 5915-01-319-0114
NSN 6135-00-134-6648
NSN 6110-01-424-2534
NSN 5985-01-424-0573
NSN 6145-01-397-1598
NSN 5996-01-632-5951
NSN 6645-01-577-2306
NSN 6610-01-642-1752