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 5930-01-554-7142
NSN 5945-01-086-5649
NSN 5960-01-452-1907
NSN 6220-00-391-1076
NSN 5975-01-559-0440
NSN 5930-00-814-9336
NSN 6620-00-175-0663
NSN 6145-01-338-8344
NSN 6610-01-375-1527
NSN 5996-00-819-4579
NSN 4140-01-285-4418
NSN 4140-01-124-0623