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 6240-00-489-8531
NSN 5925-01-043-4227
NSN 2925-00-544-2545
NSN 5910-01-422-3721
NSN 5925-01-463-9258
NSN 6645-00-363-9775
NSN 5960-01-553-4557
NSN 6110-00-858-6770
NSN 5910-00-403-4069
NSN 4140-01-350-4475
NSN 6320-00-174-1362
NSN 5905-01-427-3804