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 5915-01-336-7669
NSN 5905-01-065-7387
NSN 6320-00-284-1524
NSN 6240-01-232-1703
NSN 5945-00-142-0005
NSN 5915-00-269-4463
NSN 5998-01-634-0604
NSN 5999-00-661-0954
NSN 6145-00-873-4808
NSN 6620-01-532-2243
NSN 6110-01-567-6471
NSN 6650-01-344-5376