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 5930-01-468-1117
NSN 6150-00-314-5242
NSN 5935-01-385-4264
NSN 5998-01-411-8403
NSN 6610-00-901-5137
NSN 6145-01-348-5857
NSN 5930-01-658-5311
NSN 6150-00-482-6353
NSN 6620-01-494-9858
NSN 5950-00-194-0838
NSN 7035-01-403-2841
NSN 5985-00-529-0093