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 5920-00-246-5992
NSN 6220-01-648-2184
NSN 5945-00-263-3036
NSN 6650-01-450-9767
NSN 6130-01-639-8149
NSN 5999-01-583-5797
NSN 6135-01-633-8502
NSN 5915-01-176-4418
NSN 6610-01-056-7499
NSN 5925-01-187-0695
NSN 6685-00-460-2174
NSN 5945-01-219-6023