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 5950-01-519-8947
NSN 5975-01-127-5988
NSN 5960-00-736-8568
NSN 6650-01-599-9849
NSN 6620-00-441-5252
NSN 5895-01-415-2476
NSN 5835-01-519-2916
NSN 5910-01-076-0345
NSN 5910-01-208-2338
NSN 6320-00-593-0379
NSN 6240-01-431-9827
NSN 5925-01-327-5728