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 5930-01-492-0208
NSN 5835-01-495-0595
NSN 5895-01-312-2085
NSN 5960-01-623-3381
NSN 6145-00-038-3369
NSN 5998-00-948-7996
NSN 6685-01-191-7744
NSN 5920-01-024-0592
NSN 5905-00-942-4974
NSN 6620-01-261-2985
NSN 6240-01-387-9737
NSN 6320-01-233-5798