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.
Classification: Check valves of iron
NSN 5965-00-524-5521
NSN 6650-01-163-6330
NSN 5920-01-364-6911
NSN 6320-01-399-6177
NSN 5835-00-967-0998
NSN 6650-01-515-9396
NSN 6685-01-366-5759
NSN 6620-00-064-3598
NSN 6620-00-643-1402
NSN 5895-01-496-6976
NSN 5950-01-476-7341
NSN 5996-01-430-4258