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 6620-01-030-0525
NSN 6145-01-330-5156
NSN 5960-01-577-0628
NSN 5996-00-243-1418
NSN 5950-00-605-6781
NSN 5945-01-565-4383
NSN 5985-00-225-8410
NSN 5915-00-563-1558
NSN 6130-01-527-5523
NSN 5895-00-707-6663
NSN 5975-01-506-0454
NSN 6130-01-348-5713