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 6130-01-580-5815
NSN 2925-01-381-5307
NSN 4140-00-189-0235
NSN 6130-01-035-3721
NSN 5930-01-573-1533
NSN 5950-01-535-2980
NSN 7035-01-038-9970
NSN 5895-01-315-9217
NSN 6240-01-484-6712
NSN 6145-01-592-5741
NSN 5895-01-600-2940
NSN 6130-01-318-1803