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 5905-01-374-1779
NSN 5895-01-063-6938
NSN 6145-00-020-6708
NSN 5985-01-215-0705
NSN 5855-01-622-7526
NSN 5998-01-440-5953
NSN 5920-01-154-1039
NSN 5965-00-485-9575
NSN 6610-01-375-9994
NSN 6110-01-160-7706
NSN 5975-01-055-9756
NSN 5999-01-229-5420