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 5895-01-079-0639
NSN 6240-01-012-6953
NSN 5990-01-272-4091
NSN 5998-01-363-0945
NSN 5855-01-056-9607
NSN 2925-00-048-7172
NSN 5910-00-100-5784
NSN 6650-00-307-3437
NSN 6240-01-223-1435
NSN 5930-01-462-6152
NSN 6130-01-366-4310
NSN 5950-01-242-9896