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 6240-01-110-8265
NSN 7035-01-106-3476
NSN 5965-01-584-3644
NSN 5996-01-409-1860
NSN 6320-00-225-7013
NSN 6620-00-377-5555
NSN 6650-00-902-9741
NSN 6135-01-660-2840
NSN 5999-00-487-5054
NSN 5990-01-147-5225
NSN 5965-01-446-1939
NSN 5930-01-542-5811