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 5935-01-626-9981
NSN 6240-00-012-7934
NSN 5996-00-835-5290
NSN 5935-00-872-8846
NSN 5925-01-362-3425
NSN 6150-00-153-9361
NSN 6320-01-329-2297
NSN 5975-01-359-4848
NSN 6320-00-646-3311
NSN 5998-01-061-2346
NSN 5945-00-300-0903
NSN 6685-01-271-1987