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 6145-01-648-3781
NSN 6105-01-562-2922
NSN 2925-01-259-0785
NSN 6110-01-608-3775
NSN 5960-01-573-6483
NSN 5895-01-558-9746
NSN 6620-00-146-3465
NSN 5998-00-157-3789
NSN 5935-00-355-1618
NSN 2925-01-208-6638
NSN 6145-01-440-9983
NSN 6220-00-476-9649