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 5930-01-114-5271
NSN 5925-01-029-3483
NSN 5950-01-246-4576
NSN 6240-01-177-6386
NSN 5965-01-532-2112
NSN 6645-00-814-4558
NSN 5999-00-358-1933
NSN 7035-00-153-3826
NSN 6685-01-534-3725
NSN 6145-00-949-3331
NSN 5835-01-314-2781
NSN 6220-01-445-5544