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 5930-01-150-1028
NSN 5910-01-391-4528
NSN 5990-01-334-8634
NSN 5960-01-170-4057
NSN 6240-00-499-3276
NSN 5965-01-480-8784
NSN 5960-00-899-0449
NSN 5998-01-283-8234
NSN 6610-01-553-0976
NSN 5960-00-268-3200
NSN 5945-00-972-5223
NSN 5905-00-726-0272