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 6320-01-072-2073
NSN 6135-00-016-0071
NSN 5960-01-328-8248
NSN 6650-01-592-5480
NSN 6240-01-472-2950
NSN 6150-00-924-9853
NSN 5985-01-521-1495
NSN 5950-01-448-8483
NSN 5998-00-300-2623
NSN 6320-01-425-1417
NSN 6645-01-366-4344
NSN 5910-00-136-4058