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 4140-01-075-5455
NSN 5996-01-338-7562
NSN 5895-01-505-9792
NSN 5975-01-449-1798
NSN 5975-01-469-6586
NSN 6685-01-627-0516
NSN 5950-00-154-0329
NSN 6150-01-254-9966
NSN 5915-00-932-0604
NSN 6320-01-422-0765
NSN 4140-00-099-9205
NSN 6135-00-643-4843