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 5835-01-284-5689
NSN 5990-00-011-2994
NSN 5930-01-257-3060
NSN 6650-01-185-7896
NSN 6685-01-540-4645
NSN 6135-00-856-1343
NSN 5915-00-516-9987
NSN 2925-00-225-5386
NSN 5975-00-707-6245
NSN 5990-00-410-6202
NSN 4140-00-215-8593
NSN 6685-01-444-1496