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 5998-01-228-1735
NSN 5935-01-504-4429
NSN 5835-00-090-3924
NSN 5999-00-223-1900
NSN 6145-00-978-5968
NSN 5996-00-933-7738
NSN 5960-01-317-3800
NSN 2925-00-081-3547
NSN 2925-01-194-9737
NSN 5930-00-316-9588
NSN 6610-01-429-2162
NSN 6240-01-588-3477