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 6135-00-299-6918
NSN 5998-00-153-1378
NSN 5950-01-268-1573
NSN 6685-00-880-8753
NSN 5895-01-168-9754
NSN 5910-00-997-5775
NSN 5996-00-907-3261
NSN 5915-01-223-3640
NSN 5975-01-256-1611
NSN 5998-00-155-6002
NSN 6685-00-317-3221
NSN 7035-01-062-1692