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 5998-01-228-5709
NSN 6130-01-174-4208
NSN 5915-01-565-8717
NSN 5925-01-122-8135
NSN 7035-01-581-5206
NSN 6105-01-352-6103
NSN 6685-01-369-0089
NSN 6610-00-583-1084
NSN 5835-00-764-4388
NSN 5999-01-407-5531
NSN 6610-01-014-3964
NSN 6620-00-803-2346