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 5975-01-417-1752
NSN 5895-01-559-5451
NSN 6220-01-237-5999
NSN 5990-00-186-2445
NSN 2925-01-293-6266
NSN 5975-00-713-5078
NSN 5996-01-349-6046
NSN 5915-00-399-7803
NSN 6110-01-576-9899
NSN 6150-01-368-1810
NSN 6130-01-237-2358
NSN 6110-01-551-3673