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 2925-01-262-1418
NSN 6240-01-176-0223
NSN 5895-01-475-9245
NSN 4140-00-101-7903
NSN 5925-00-482-2396
NSN 5965-01-550-6139
NSN 5999-00-372-5709
NSN 5996-01-230-4157
NSN 5965-00-518-0958
NSN 6620-01-185-5541
NSN 5905-00-898-0128
NSN 4140-00-193-8879