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 6685-01-215-1204
NSN 6320-01-491-0327
NSN 6130-01-538-7466
NSN 5996-01-323-1500
NSN 5895-01-346-7643
NSN 6135-00-505-0679
NSN 5975-00-583-2425
NSN 5925-01-195-2985
NSN 6650-01-452-5379
NSN 5996-01-237-1615
NSN 6150-01-293-5951
NSN 6110-01-619-8262