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 5998-01-227-9798
NSN 5930-00-366-1357
NSN 5985-00-721-4303
NSN 4140-01-579-1955
NSN 6650-00-155-5827
NSN 6220-00-084-4240
NSN 5920-00-199-9482
NSN 6145-01-025-6514
NSN 5925-00-959-6075
NSN 6320-01-383-3257
NSN 5975-00-754-4035
NSN 6650-00-471-1117