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 6135-01-359-5798
NSN 6110-01-525-7358
NSN 2925-01-513-9114
NSN 5950-01-344-9050
NSN 6240-00-635-9953
NSN 5996-01-089-2777
NSN 6220-00-660-5539
NSN 6685-00-596-8765
NSN 5935-00-491-7143
NSN 5960-00-246-4623
NSN 5985-00-827-4171
NSN 5998-01-161-4442