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 5998-01-534-8830
NSN 6135-01-310-9866
NSN 5835-01-301-0022
NSN 4140-00-093-7679
NSN 5915-01-357-3483
NSN 5950-01-589-8105
NSN 6610-00-176-5486
NSN 6220-00-151-7539
NSN 6645-00-192-1152
NSN 6145-00-581-1629
NSN 6620-01-594-1833
NSN 5935-00-619-5173