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 5950-01-070-1553
NSN 5905-00-391-6398
NSN 5998-01-401-5396
NSN 5960-01-416-6187
NSN 5990-00-878-1973
NSN 6320-01-270-1419
NSN 6240-01-519-0507
NSN 6685-01-227-5471
NSN 5996-01-432-1145
NSN 5960-00-902-5727
NSN 5990-01-386-3040
NSN 5996-01-104-7884