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 6240-01-384-8802
NSN 5999-00-911-4621
NSN 6105-01-443-3787
NSN 5915-01-053-2956
NSN 6610-01-100-3662
NSN 6650-01-485-3444
NSN 5945-01-349-1551
NSN 6110-00-932-1590
NSN 5996-01-148-9926
NSN 5960-01-394-0750
NSN 6685-01-591-7440
NSN 5935-01-461-3099