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 6320-00-937-5625
NSN 5975-00-200-2002
NSN 5990-01-215-0590
NSN 5855-00-247-7219
NSN 6645-00-183-8812
NSN 6130-00-184-0117
NSN 7035-00-337-8745
NSN 6320-01-139-0533
NSN 6220-01-471-8702
NSN 6220-00-264-9473
NSN 5935-01-258-3953
NSN 6110-00-508-5892