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 5990-01-250-4198
NSN 5998-00-422-5538
NSN 2925-00-860-3652
NSN 6240-01-250-3574
NSN 6145-01-474-4702
NSN 5950-01-447-5990
NSN 5998-00-677-1949
NSN 6105-00-448-0399
NSN 5855-00-318-7185
NSN 5930-00-330-4706
NSN 5930-00-773-3445
NSN 5930-01-406-4281