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 5998-01-459-0027
NSN 6150-01-208-4305
NSN 5985-01-022-1738
NSN 6220-00-810-9563
NSN 6135-00-898-6996
NSN 6220-01-441-2889
NSN 6685-01-061-8600
NSN 5999-01-352-5556
NSN 4140-00-420-0251
NSN 5950-00-618-9312
NSN 5935-01-375-3844
NSN 5999-00-973-0667