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 5925-01-170-4150
NSN 5835-01-442-6482
NSN 5895-01-605-1464
NSN 6110-01-483-7706
NSN 5835-01-398-3859
NSN 6645-01-425-1673
NSN 6650-00-479-2089
NSN 2925-01-244-3016
NSN 5855-01-492-6385
NSN 5945-01-158-6075
NSN 5950-01-140-1506
NSN 6105-01-073-4881