Flange meets mil-f-20042
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 5925-00-476-8740
NSN 6620-01-411-2295
NSN 5999-01-346-6017
NSN 5855-01-535-7127
NSN 5855-00-472-2055
NSN 6650-01-445-6492
NSN 5965-00-144-2543
NSN 5930-01-297-8653
NSN 6135-01-216-7170
NSN 5990-01-574-2522
NSN 5999-01-029-1842
NSN 5975-01-147-1453