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 5998-01-283-6877
NSN 5925-00-140-6367
NSN 5855-01-515-2573
NSN 6650-01-049-1881
NSN 6650-01-420-0233
NSN 5930-00-185-5141
NSN 5960-01-226-0342
NSN 6145-00-437-8960
NSN 6110-01-048-2414
NSN 6130-00-824-7120
NSN 5925-00-806-7493
NSN 5895-01-238-2654