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 5998-01-406-5713
NSN 6135-01-010-0891
NSN 6240-01-069-2688
NSN 6135-01-223-3869
NSN 6145-01-502-4308
NSN 5975-00-082-0894
NSN 5996-00-196-7258
NSN 5895-00-883-6361
NSN 6150-00-443-3419
NSN 6685-01-634-0611
NSN 6240-00-729-9696
NSN 5915-01-038-4372