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 6220-01-424-2478
NSN 5920-01-585-3225
NSN 5960-01-227-9642
NSN 6130-01-583-5017
NSN 5835-01-039-3346
NSN 6135-01-167-0759
NSN 5915-00-333-7994
NSN 5945-01-008-2255
NSN 4140-00-702-4647
NSN 6240-00-479-5057
NSN 6685-00-438-5444
NSN 6110-00-838-0492