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 5999-01-293-9810
NSN 7035-01-617-0072
NSN 4140-00-299-6328
NSN 5950-01-064-7373
NSN 5985-01-106-2747
NSN 5835-01-386-4027
NSN 5935-00-225-2854
NSN 6645-01-545-6853
NSN 5910-00-227-9795
NSN 6135-00-078-9931
NSN 6220-00-528-7752
NSN 5999-01-454-3708