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 5965-01-167-8513
NSN 6220-01-429-8534
NSN 5950-00-583-1568
NSN 5835-00-830-6416
NSN 5950-01-518-4597
NSN 5930-01-549-8317
NSN 5990-01-298-3152
NSN 5985-01-188-2620
NSN 2925-01-436-7325
NSN 6645-01-381-2050
NSN 6110-01-003-4607
NSN 6110-00-108-6478