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 6650-00-952-2754
NSN 2925-00-885-3979
NSN 6610-01-140-5921
NSN 5965-00-620-7154
NSN 6145-01-068-8618
NSN 7035-01-146-1578
NSN 4140-01-438-0778
NSN 5855-01-642-7607
NSN 5930-00-296-9271
NSN 6145-00-423-1563
NSN 5920-01-062-7106
NSN 6610-01-006-3255