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 4140-00-590-2317
NSN 6105-01-651-6124
NSN 5960-00-419-3641
NSN 5998-00-900-5882
NSN 5855-01-610-9321
NSN 5998-00-473-2035
NSN 5950-01-631-4279
NSN 6150-00-450-2813
NSN 7035-01-578-6909
NSN 5950-01-207-0929
NSN 5945-01-022-1161
NSN 5996-00-819-9625