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 5996-01-492-5408
NSN 5935-01-592-3057
NSN 5945-00-871-6995
NSN 5985-01-183-8218
NSN 6650-01-100-9964
NSN 5920-01-360-8310
NSN 6320-01-551-3553
NSN 5935-01-534-5936
NSN 6610-01-130-5101
NSN 5910-00-777-1800
NSN 5835-00-023-0780
NSN 5985-01-025-2345