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 5855-00-444-2298
NSN 5998-01-231-4717
NSN 6130-01-443-2006
NSN 5835-00-327-6192
NSN 5975-01-530-3517
NSN 5915-01-657-2950
NSN 2925-00-654-3206
NSN 5920-00-527-9473
NSN 2925-00-827-2326
NSN 6650-01-570-6094
NSN 5965-01-633-8849
NSN 6320-01-194-1253