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 6620-01-519-2628
NSN 6220-01-365-1319
NSN 6105-01-284-6983
NSN 6130-01-333-9515
NSN 6150-01-460-2341
NSN 6240-01-579-1628
NSN 5985-00-508-9949
NSN 5960-01-439-3731
NSN 5999-01-431-7323
NSN 5975-01-048-8261
NSN 5965-00-458-7321
NSN 6145-01-596-4356