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 5998-01-201-7166
NSN 6620-01-189-8153
NSN 5895-01-511-0062
NSN 6220-01-003-9126
NSN 6105-00-893-3139
NSN 6150-01-218-7035
NSN 5990-01-253-5672
NSN 5998-00-155-6002
NSN 6650-00-960-5040
NSN 5855-01-323-5394
NSN 6685-00-168-0847
NSN 5960-01-175-9880