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 5925-01-381-5199
NSN 6240-01-585-7753
NSN 5855-00-688-9954
NSN 5835-01-089-7615
NSN 6620-01-572-2493
NSN 7035-00-145-9138
NSN 5999-00-070-9863
NSN 6320-00-456-0836
NSN 5999-01-577-1671
NSN 6110-01-282-2329
NSN 5950-01-648-2677
NSN 6685-00-642-0533