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 6320-01-330-8054
NSN 6240-01-299-1627
NSN 6645-00-816-5337
NSN 5910-00-953-8657
NSN 2925-01-357-9021
NSN 6145-01-654-9635
NSN 5945-00-116-1113
NSN 4140-01-048-5472
NSN 6150-01-387-2356
NSN 6145-01-634-0388
NSN 5915-01-288-0432
NSN 5990-01-476-0722