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 6130-01-529-0650
NSN 6320-01-262-8642
NSN 5950-01-081-6941
NSN 5965-01-020-4104
NSN 5998-01-300-2309
NSN 5960-01-456-1735
NSN 6610-01-491-6226
NSN 5996-01-183-3632
NSN 5920-00-435-1938
NSN 5960-01-180-8000
NSN 5925-01-553-0465
NSN 5999-01-028-8027