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 5930-01-274-1171
NSN 6150-01-227-8041
NSN 6650-01-250-1244
NSN 7035-01-598-2394
NSN 5855-00-944-0949
NSN 7035-00-585-2113
NSN 6240-00-292-3237
NSN 6110-01-647-0777
NSN 5915-01-115-7398
NSN 6135-00-284-1406
NSN 6620-01-083-1526
NSN 5895-01-272-6043