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 6130-01-424-7616
NSN 5975-01-585-7694
NSN 5925-01-146-5528
NSN 5985-00-539-9365
NSN 5915-00-796-2847
NSN 6620-01-497-3744
NSN 5930-01-485-8785
NSN 2925-01-014-8007
NSN 5998-01-366-3122
NSN 5985-01-619-0894
NSN 6620-01-600-0479
NSN 6610-01-375-9994