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 2925-01-063-7876
NSN 5935-01-519-3376
NSN 6110-01-104-9589
NSN 6650-01-003-2925
NSN 6220-01-166-9219
NSN 6220-00-539-7446
NSN 5998-01-438-8535
NSN 5999-01-429-5958
NSN 5925-00-729-7750
NSN 6220-00-850-6553
NSN 7035-01-429-7954
NSN 6650-01-058-5908