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 6685-01-250-2408
NSN 5985-01-306-8326
NSN 5998-00-406-9642
NSN 6145-00-313-9429
NSN 5990-00-428-1895
NSN 6105-01-125-0318
NSN 6135-01-300-8455
NSN 6610-01-189-3001
NSN 5945-01-437-1493
NSN 4140-01-359-6231
NSN 5945-00-957-0738
NSN 6650-01-112-0453