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 5935-01-410-7823
NSN 5998-00-102-9223
NSN 6650-01-425-7362
NSN 5910-00-057-8207
NSN 5950-00-682-4378
NSN 4140-00-106-2659
NSN 5895-01-289-7214
NSN 5915-01-239-8931
NSN 5950-01-399-0509
NSN 6240-01-512-8129
NSN 5835-01-131-2027
NSN 6620-01-435-0799