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 6130-00-281-5978
NSN 6620-01-613-7996
NSN 5960-01-328-1533
NSN 6130-01-151-0026
NSN 5910-01-171-1499
NSN 6135-01-364-0667
NSN 6650-00-621-2931
NSN 7035-01-026-6602
NSN 4140-00-066-7932
NSN 5990-00-350-2352
NSN 6645-01-334-0782
NSN 6320-01-106-4414