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 5950-01-417-3119
NSN 5915-00-281-5414
NSN 2925-00-532-1481
NSN 6110-01-386-1536
NSN 6150-01-152-8350
NSN 5910-00-948-7725
NSN 6240-00-773-2872
NSN 6610-00-986-2095
NSN 6150-00-959-6164
NSN 5960-00-512-9121
NSN 6620-01-152-4099
NSN 6110-01-326-2541