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 6320-01-414-7099
NSN 6135-01-391-6515
NSN 5905-01-471-6784
NSN 5990-01-407-1474
NSN 5998-00-146-1050
NSN 5950-01-167-0825
NSN 4140-00-060-8692
NSN 2925-01-379-0903
NSN 5985-00-038-8328
NSN 5835-00-975-6538
NSN 5920-01-250-5243
NSN 4140-01-290-7409