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 6240-01-457-5520
NSN 6620-01-318-8314
NSN 5945-01-566-7355
NSN 5895-00-199-4964
NSN 5998-00-413-1239
NSN 5835-01-264-8782
NSN 6150-00-185-3293
NSN 5990-01-147-5225
NSN 5920-01-649-1420
NSN 5975-00-763-5437
NSN 5998-01-062-3261
NSN 5965-00-121-0923