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 7035-01-323-0164
NSN 5930-00-432-0151
NSN 5990-00-155-2306
NSN 5925-01-012-1890
NSN 6150-01-650-0520
NSN 6130-00-850-2300
NSN 4140-01-236-0112
NSN 6320-01-386-7396
NSN 5998-01-307-9281
NSN 5999-00-081-9413
NSN 5945-01-605-7340
NSN 5999-00-657-4747