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 5920-01-065-1824
NSN 5985-01-109-6107
NSN 5998-00-843-1125
NSN 6110-00-452-9148
NSN 6610-01-327-3187
NSN 6145-01-256-8225
NSN 5930-01-243-5178
NSN 5930-01-634-0659
NSN 6240-00-686-5345
NSN 6685-00-948-3270
NSN 5960-01-029-4551
NSN 5915-00-722-1847