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 5835-01-481-4204
NSN 2925-01-055-7607
NSN 5990-01-107-1003
NSN 5905-01-177-6327
NSN 5915-00-058-3731
NSN 5998-00-243-5416
NSN 5855-01-410-8979
NSN 6240-00-398-0740
NSN 5925-01-254-2578
NSN 6110-01-233-4490
NSN 6610-01-185-5832
NSN 6135-01-609-6476