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 6685-01-556-1965
NSN 2925-01-579-8620
NSN 5835-01-330-6791
NSN 5985-01-259-3813
NSN 5975-01-062-1435
NSN 6650-01-444-2152
NSN 4140-01-547-5589
NSN 4140-01-513-0767
NSN 5985-00-973-5833
NSN 6145-01-183-4137
NSN 6105-00-872-6315
NSN 5990-00-110-9441