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 5930-00-317-3006
NSN 5999-00-393-2811
NSN 5915-01-032-0172
NSN 5975-00-789-6209
NSN 5965-00-735-9315
NSN 6645-01-161-1707
NSN 5975-01-143-1920
NSN 5985-01-618-0373
NSN 6130-01-452-1311
NSN 5999-01-442-8085
NSN 5925-01-393-7341
NSN 5975-00-855-4623