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 5950-00-021-6923
NSN 5930-00-109-8153
NSN 4140-00-433-9571
NSN 5950-01-441-7861
NSN 2925-01-567-7646
NSN 6145-01-417-2988
NSN 6135-01-483-5269
NSN 6610-00-091-1056
NSN 5925-00-359-4087
NSN 5985-01-322-3706
NSN 5835-01-023-0511
NSN 5990-01-658-9964