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 5920-01-063-8123
NSN 5985-00-784-0893
NSN 6685-01-571-3342
NSN 5910-00-518-1477
NSN 5965-01-450-3971
NSN 5998-00-960-0854
NSN 5990-01-356-4259
NSN 6105-01-642-2709
NSN 5996-01-069-2915
NSN 6645-00-350-8070
NSN 5915-01-457-9126
NSN 5996-01-054-3226