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 6105-00-841-4005
NSN 6220-00-450-0577
NSN 5975-00-833-1776
NSN 5960-01-226-7297
NSN 6320-01-119-3935
NSN 7035-01-320-7453
NSN 5920-01-302-1995
NSN 6130-00-018-5719
NSN 5960-01-216-6393
NSN 2925-00-924-1159
NSN 6650-00-140-2353
NSN 6685-01-092-9022