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 5990-01-421-3325
NSN 5930-01-301-2784
NSN 6220-00-216-7284
NSN 5950-01-139-5266
NSN 5990-01-126-5824
NSN 5990-01-417-4402
NSN 4140-01-463-9299
NSN 2925-01-172-9209
NSN 5945-00-520-6043
NSN 5965-01-391-1703
NSN 5930-01-193-5679
NSN 5975-01-183-3146