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 5935-01-583-9428
NSN 5910-01-520-5595
NSN 6685-00-820-4724
NSN 5999-00-473-9946
NSN 6610-00-146-3499
NSN 5975-01-599-7092
NSN 5855-01-463-1315
NSN 6610-01-361-8965
NSN 6145-01-384-2983
NSN 5920-00-755-3235
NSN 5965-00-905-6895
NSN 5996-01-021-7089