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 5910-00-856-2072
NSN 6220-00-769-7858
NSN 6150-01-132-0001
NSN 6620-00-898-2744
NSN 6645-00-556-8105
NSN 2925-00-288-1394
NSN 5950-01-441-2143
NSN 6130-01-287-9841
NSN 5915-01-486-4068
NSN 5960-01-029-4551
NSN 6220-00-258-2967
NSN 5975-01-555-8712