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 6650-01-437-9557
NSN 5835-01-495-0595
NSN 5999-01-465-2225
NSN 6320-00-925-0558
NSN 5998-01-222-0192
NSN 5990-01-221-6361
NSN 5950-01-634-0677
NSN 5975-00-822-7022
NSN 5996-01-235-1643
NSN 6150-01-418-8975
NSN 7035-01-465-9156
NSN 6650-01-180-2173