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 5915-01-323-7154
NSN 6145-00-338-5645
NSN 5855-01-475-4454
NSN 2925-01-197-7864
NSN 4140-01-063-5929
NSN 5920-00-723-4554
NSN 4140-01-470-4886
NSN 6145-01-426-6657
NSN 5960-00-393-2505
NSN 5925-01-088-6863
NSN 5920-01-420-5768
NSN 6650-01-490-5205