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 5999-01-470-9159
NSN 6220-00-923-9439
NSN 5990-01-200-6711
NSN 5965-01-118-1416
NSN 5985-01-386-0566
NSN 5930-00-126-7288
NSN 5835-00-494-1701
NSN 2925-01-236-3547
NSN 6645-00-664-4665
NSN 6610-01-168-7943
NSN 7035-00-392-5417
NSN 4140-01-146-4474