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 5915-01-534-3397
NSN 5965-01-597-8749
NSN 5935-01-472-3447
NSN 5996-00-101-9667
NSN 6135-00-503-7213
NSN 5905-01-603-7668
NSN 6110-00-962-7858
NSN 6220-00-660-5539
NSN 5915-00-483-0136
NSN 5925-00-539-8372
NSN 2925-01-151-6969
NSN 6240-01-296-2578