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 5998-01-447-5663
NSN 5920-01-445-6970
NSN 2925-01-043-9786
NSN 6105-00-381-8599
NSN 5985-01-448-5950
NSN 5935-00-632-7795
NSN 6620-00-464-6105
NSN 6240-01-041-7477
NSN 6145-00-635-9957
NSN 5965-00-086-8513
NSN 6130-01-284-6331
NSN 5835-01-241-1090