Thd series designator is non-std
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 steel
NSN 6685-01-189-9937
NSN 5910-00-762-3960
NSN 6110-01-473-9550
NSN 6240-01-361-8344
NSN 5975-00-933-0250
NSN 5945-01-564-6035
NSN 6220-01-068-3100
NSN 5935-00-270-1271
NSN 5895-01-469-1832
NSN 5975-01-461-9556
NSN 6105-00-933-2930
NSN 5960-01-170-4057