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 5910-01-609-7149
NSN 5925-01-487-6830
NSN 5930-01-385-8567
NSN 6105-01-417-2174
NSN 6620-00-974-7595
NSN 4140-01-488-5980
NSN 6240-01-218-3828
NSN 5985-00-929-3616
NSN 5950-00-155-8340
NSN 7035-01-135-0050
NSN 5990-01-386-3040
NSN 4140-00-040-2084