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 6240-01-170-3491
NSN 5935-01-304-3338
NSN 5895-01-065-2336
NSN 5910-00-532-7091
NSN 5915-01-381-6547
NSN 6145-01-483-6567
NSN 5990-01-188-7309
NSN 4140-00-385-2925
NSN 5975-00-513-2712
NSN 6620-01-230-0197
NSN 5920-01-265-1288
NSN 5925-01-596-2796