Valve size 4.000 in.
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 5895-01-603-6425
NSN 5950-01-370-4023
NSN 5960-01-248-1105
NSN 6685-01-345-9747
NSN 5925-01-046-0375
NSN 5930-00-059-7398
NSN 5996-00-202-6576
NSN 5960-00-977-6179
NSN 6685-00-992-2259
NSN 5965-01-436-0390
NSN 5960-00-739-1280
NSN 6650-00-842-5463