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 5998-01-035-5972
NSN 5950-01-088-0034
NSN 4140-01-171-3246
NSN 6105-00-107-3315
NSN 2925-01-197-7864
NSN 5950-01-052-7308
NSN 6620-00-146-3465
NSN 6150-00-675-1307
NSN 5895-01-631-0052
NSN 5835-01-116-2369
NSN 5985-00-487-8463
NSN 5910-01-514-0041