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 6620-00-379-2856
NSN 6145-00-382-6199
NSN 5975-00-861-4422
NSN 6240-01-633-9357
NSN 6650-01-512-1930
NSN 5990-01-272-4091
NSN 5920-01-649-1420
NSN 5990-00-630-6154
NSN 5950-00-589-6292
NSN 4140-01-077-7555
NSN 6220-00-673-8952
NSN 5950-01-391-7522