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 5855-01-068-3683
NSN 6220-01-505-0538
NSN 5835-01-502-9228
NSN 6110-01-391-7542
NSN 6320-01-227-2648
NSN 7035-01-340-7754
NSN 6240-01-386-4594
NSN 6150-01-336-9281
NSN 5895-00-725-2702
NSN 6240-01-239-8268
NSN 5950-01-536-0666
NSN 2925-00-355-5130