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 5990-01-442-3520
NSN 5985-01-019-4911
NSN 5950-01-426-8810
NSN 4140-00-450-1989
NSN 5835-01-268-1924
NSN 6320-00-004-9158
NSN 6650-01-074-8232
NSN 5965-01-609-7978
NSN 7035-01-601-7936
NSN 6220-01-277-5812
NSN 5990-00-809-0088
NSN 5930-01-548-5273