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 5905-00-143-0943
NSN 6130-00-925-2303
NSN 5975-01-032-4641
NSN 5930-00-972-2424
NSN 5998-01-469-3832
NSN 6110-01-118-4414
NSN 6150-00-222-5033
NSN 5935-01-443-1041
NSN 6610-00-982-2778
NSN 5895-01-419-0459
NSN 5835-00-484-1529
NSN 6620-01-206-5748