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 5975-01-364-0000
NSN 5925-00-347-0566
NSN 5855-01-438-4588
NSN 5835-01-062-2235
NSN 4140-00-337-6631
NSN 5945-00-539-2048
NSN 5920-01-332-1033
NSN 5905-00-583-3133
NSN 5985-01-028-3089
NSN 7035-00-153-3826
NSN 5895-00-916-7262
NSN 6610-00-837-3012