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 6145-01-634-0388
NSN 6220-01-463-9826
NSN 5999-01-225-5720
NSN 6240-01-096-4572
NSN 6650-01-215-4487
NSN 5905-00-549-9944
NSN 5950-01-320-6748
NSN 5930-00-407-4532
NSN 6110-00-233-6626
NSN 6240-01-462-1874
NSN 6130-01-553-3855
NSN 6110-01-453-3411